Complaint Letter Template for Poor Service, Billing Errors, and Product Issues

Use this complaint letter when a company delivers poor service, sends a faulty product, or ignores an earlier support request.

It helps you explain the problem clearly, request a refund, replacement, or correction, and set a professional deadline before escalating the issue.

Best for customer service disputes, billing problems, damaged orders, and unresolved complaints after earlier emails or calls.

Related templates: Refund Request Letter Template, Billing Dispute Letter Template, Refund Policy Generator.