Complaint Letter to a Bank for Unauthorized or Fraudulent Charges
Use this template when you have discovered unauthorized or fraudulent transactions on your bank account and need to formally notify your bank in writing. This letter is appropriate when phone calls to customer service have not fully resolved the issue or when you want a documented record of your dispute for your protection.
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Complaint Letter to an Insurance Company for Claim Denial
Use this template when your insurance company has denied a claim that you believe should be covered under your policy. This letter serves as a formal appeal and written record of your dispute, appropriate when initial verbal discussions with your insurer have not resolved the matter.
View Template📋 Complaint LettersComplaint Letter to a Hospital for Incorrect or Excessive Billing
Use this template when you have received a hospital bill that contains errors, unexpected charges, or amounts that appear excessive compared to the services provided. This letter is appropriate when initial calls to the billing department have not resolved the issue and you need a formal written dispute on record.
View Template📋 Complaint LettersComplaint Letter to an Online Retailer for Receiving the Wrong Item
Use this template when you have received an incorrect item from an online order. This letter clearly describes the discrepancy between what you ordered and what you received, provides relevant order details, and requests a specific resolution such as a replacement or refund.
View Template📋 Complaint LettersComplaint Letter to a Telecom Provider for Service Issues
Use this template when you are experiencing persistent problems with your telecommunications or internet service, such as frequent outages, slow speeds, or poor customer support. This letter documents the issues, references your account details, and demands a resolution or compensation.
View Template📋 Complaint LettersComplaint Letter to a Utility Company for an Overcharge
Use this template when your utility bill contains charges that are significantly higher than expected or includes errors you believe are incorrect. This letter requests a review of your account, provides supporting details, and asks for a billing adjustment or explanation.
View TemplateHow to customize this template quickly
- Replace each placeholder with your real details.
- Adjust one sentence for your exact timeline and context.
- Read once for tone, then send.
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