Professional services, subscriptions, in-person work, and digital platforms. Evidence requirements, critical mistakes, and winning response frameworks across all four major networks.
The cardholder claims the service they received materially differed from what was advertised, described, or contracted. The service was performed — the customer is not claiming nothing happened — but they are asserting that what happened did not match what they agreed to pay for.
This is one of the hardest dispute categories to defend. Unlike product disputes where a description can be compared to a physical item, service quality and scope are often subjective. The customer can characterize the service as inadequate, incomplete, or misrepresented in ways that are genuinely difficult to disprove with documentation alone.
Common triggers: service delivered at a lower scope than contracted, quality significantly below what was advertised, material terms not disclosed at booking, substitute providers used without disclosure, or scope reduced without agreement after the sale.
Your best defense in this category is always a written service agreement that defines scope precisely, combined with documentation that the agreed scope was delivered.
All four networks cover service misrepresentation under their "not as described" codes, using the same codes that apply to physical product disputes.
| Network | Code | Official Name |
|---|---|---|
| Visa | 13.3 | Not as Described or Defective Merchandise/Services |
| Mastercard | 4853 | Cardholder Dispute — Goods or Services Not as Described |
| American Express | C31 | Goods/Services Not as Described |
| Discover | RM | Non-Matching Services |
These three requirements are the foundation of every Service Incorrect response. The first is the most critical — and the one most merchants fail to have in a form that can be submitted as evidence.
This is the central question the reviewer must answer. Evidence requirements vary by service type:
| Service Type | Evidence to Provide |
|---|---|
| Professional / Project Services | The signed service agreement or statement of work defining the agreed scope, and delivered work product — reports, designs, code, campaigns — with timestamps confirming delivery within the contracted timeline. |
| In-Person Services | The service booking confirmation showing what was agreed to, and your service completion report or technician notes documenting exactly what was performed. |
| Digital / Subscription | Your advertised feature set or service description as it appeared at the time of purchase, and access or usage logs confirming those features were available and active during the billing period. |
| Event / Venue / Experience | The booking confirmation or event description as shown to the customer at the time of purchase, attendance records, and any post-event communications acknowledging the customer's participation. |
| Document Type | What to Include |
|---|---|
| Signed contract or agreement | The specific scope, deliverables, timeline, and payment terms the customer agreed to. Any amendments or change orders agreed to after the original signing. |
| Booking confirmation | The service details as confirmed at booking — what was included, what was not, and any terms acknowledged at the time. |
| Advertised service description | Your service listing or advertisement as it appeared at the time of purchase, archived or screenshotted at the sale date. |
Required evidence establishes what was agreed to and that the service was performed. Strongly recommended evidence closes the gap between performance and acceptance — it demonstrates the customer received the service, engaged with it, or at minimum had an opportunity to raise concerns before filing a dispute.
The single most important step is reading the dispute reason carefully and addressing it point by point:
| Complaint Type | Rebuttal Evidence to Provide |
|---|---|
| Scope dispute (less delivered than promised) | Your service agreement defining scope, and documentation of every deliverable completed — timestamped reports, emails attaching work product, CMS logs, time tracking records. |
| Quality dispute (service performed poorly) | Pre-service and post-service documentation, completion reports, any third-party review or external validation of the quality of work. If a quality standard was specified in the agreement, show it was met. |
| Misrepresentation dispute (advertised capabilities not delivered) | Your advertised service description at the time of purchase, and documentation that the described capabilities or features were available and functional during the service period. |
| Substitute provider dispute (different person or company performed the work) | Disclosure documentation showing substitution was permitted under your terms, or communications where the customer acknowledged and agreed to the substitute provider. |
Service Incorrect disputes that follow unresolved complaints are very difficult to win. If the customer complained before filing and you have no record of a response or resolution attempt, your first step should be to reach out and offer a remedy. A resolved complaint is far less likely to proceed. If you did respond and the customer rejected your offer, that documented good faith significantly strengthens your dispute position.
These items round out your case and become important if the dispute escalates to arbitration.
Service Incorrect disputes have the lowest merchant win rates of any non-fraud dispute type. Most losses are not caused by a service that was genuinely wrong — they are caused by merchants who cannot document that the service matched the agreement.
Without a written agreement defining scope, deliverables, timeline, and quality standards — the customer's characterization of what was promised carries more weight than yours. Verbal agreements and informal understandings are invisible to a dispute reviewer.
Every service engagement should begin with a written document the customer accepts: a contract, a statement of work, a booking confirmation with terms, or at minimum an emailed scope summary with the customer's reply confirming it. For recurring services, this agreement should cover what each billing period includes and what constitutes satisfactory delivery.
Service descriptions that rely on aspirational language — "world-class," "comprehensive," "full-service," "premium" — invite disputes because they set an undefined standard that the customer gets to characterize after the fact. If your service description doesn't specify what you will do, it's impossible to prove you did it.
Use specific, measurable language in both your advertising and your agreements. "Monthly retainer includes four deliverables, two review calls, and a performance report" is defensible. "Comprehensive digital marketing support" is not. Specificity protects you at every stage — from setting customer expectations to defending a dispute.
For professional services, the most common losing scenario is a merchant who performed the work but cannot prove they delivered it. Completing a task internally is not the same as delivering the output to the client. If there is no record that deliverables were sent, received, or acknowledged, they effectively don't exist from the reviewer's perspective.
Email deliverables directly to the client at completion, preserving a timestamped record of both the content and the delivery. Use project management tools that log when tasks were marked complete and when clients reviewed or commented on work. Keep a delivery log for every engagement — what was sent, when, and to whom.
If a customer hired a specific person, team, or company for their service and a different provider was used without their knowledge — or if the scope was reduced after the sale without consent — the dispute is very difficult to defend. Networks treat undisclosed substitution as a form of misrepresentation.
Always get written consent before changing a provider or reducing scope. Even a brief email exchange confirming the customer's acknowledgment is sufficient. If your terms allow for substitution, make sure that is clearly disclosed at booking and referenced in your service agreement.
"We submitted 50 items" or "we worked 40 hours" does not answer a quality dispute. Volume is not the same as value, and reviewers reviewing a quality claim are looking for evidence that what was produced met the agreed standard — not just that something was produced.
Address quality claims by pointing to the agreed standard in your contract, then showing documentation that the standard was met. If your agreement didn't define quality standards, your time records and volume metrics will carry less weight. Going forward, define acceptance criteria in every service agreement.
Service Incorrect responses must be tightly organized around the gap between what the customer claims and what your documentation shows. Every component of your response should either prove the agreed scope was delivered, or directly contradict a specific point in the customer's complaint.
Identify the specific mismatch the customer is claiming, then show — point by point — why your documentation contradicts it.
| Priority | Evidence Type |
|---|---|
| First | Customer acknowledgment — post-service communication, acceptance of deliverables, usage logs, or any engagement with the work product after delivery. |
| Second | Deliverable documentation — timestamped work product, completion reports, technician records, or access logs demonstrating the agreed scope was fulfilled. |
| Third | Service agreement or scope definition — the written record of what was agreed to, showing that what was delivered matches it. |
| Last | Refund policy, prior engagement history, and advertised service description from the time of purchase. |
Every document should be named, numbered, and described in one sentence. Do not make the reviewer determine what a document proves — tell them.
The situation: $4,500 website design project. Cardholder disputed claiming "the website I received looks nothing like the mockups I approved — they did whatever they wanted and ignored my feedback."
| Page | Evidence |
|---|---|
| 1 | February 8 email from the customer explicitly approving the revised design: "This looks great, please proceed with development." Establishes the customer approved the final design direction before production began. |
| 2 | February 20 customer reply to final delivery email confirming receipt: "Looks great, thanks for your work." Establishes acceptance of the completed project. |
| 3 | Full project communication log — 14 emails spanning January 8 through February 20, showing every round of feedback, revision, and approval, with dates. |
| 4 | Signed service agreement dated January 8, defining the revision process, deliverable schedule, and payment terms. |
Result: Chargeback successfully represented. Claim abandoned.
The situation: $600 for a 10-session personal training package. Cardholder disputed after completing 4 sessions claiming "the trainer they gave me was not the certified professional they advertised — it was an intern."
Result: Dispute ruled in cardholder's favor.
| Mistake | Explanation |
|---|---|
| Did not address the specific complaint | The customer's claim was about provider identity — not quality. The response never addressed who conducted the sessions or whether a substitution occurred. |
| No documentation of trainer credentials or identity | No session records showing which trainer conducted each appointment. Without this, the customer's account of an uncertified substitute goes unrebutted. |
| No disclosure of substitution policy | If the trainer who was advertised was not the one who conducted the sessions, there is no evidence the customer was informed or agreed to this. Undisclosed substitution is treated as misrepresentation. |
| No-refund policy submitted as primary defense | A no-refund policy does not override network rules for misrepresentation. Submitting it as the main argument without rebutting the substantive claim was counterproductive. |
Run through this checklist before finalizing your response.
Service Incorrect disputes are the hardest to win after the fact and the easiest to prevent before the fact. The gap between performing a service and proving you performed it as agreed is closed by documentation habits, not after-the-fact reconstruction.
| Action | Why It Matters |
|---|---|
| Write specific service agreements for every engagement | A precise scope definition — deliverables, timeline, quality standards, and acceptance criteria — is the foundation of every winning dispute response. Vague agreements protect no one. |
| Get written approval at every major milestone | For project-based services, a written sign-off at each stage closes disputes before they start. A customer who approved the design, the draft, and the final delivery cannot credibly claim it was wrong. |
| Log every deliverable with a timestamp | Email deliverables directly and keep the sent records. Use project management software that logs when tasks were completed and when clients interacted with them. Delivery you cannot prove is delivery that didn't happen in a dispute. |
| Disclose provider assignments explicitly at booking | If your service may be delivered by any qualified provider on your team, say so at booking and include it in your agreement. Undisclosed substitution is one of the most common triggers for misrepresentation disputes. |
| Create a post-service check-in process | A brief follow-up after every engagement — "are you satisfied with the work?" — surfaces complaints before they become disputes and creates a record of satisfaction when there are none. |
| Respond to quality complaints within 24 hours | Service Incorrect disputes almost always follow an unresolved complaint. Fast, good-faith responses to service concerns stop disputes before they start and demonstrate the professionalism your service description promised. |
This playbook is updated at least twice annually to reflect changes in network rules and issuer practices. Document Version: 2026.1 · Last Updated: March 3, 2026 · Covers: Visa 13.3 / Mastercard 4853 / Amex C31 / Discover RM
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