Sample Overpayment Letter to Customer for Mistake: Subject: Correction of Overpayment — We apologize for the error Dear [Customer's Name], I hope this letter finds you in good health and high spirits. I am writing to bring to your attention an inadvertent overpayment made by you towards your recent transaction with [Company Name]. We sincerely apologize for any inconvenience caused by this error and assure you that we are taking immediate steps to rectify it. Upon reviewing our records, we discovered that you were charged an excessive amount of [amount] for [product/service] on [date]. This overpayment was purely unintentional and occurred due to a mistake on our part in invoicing or processing the payment. We deeply regret any frustration or confusion this may have caused. To resolve this matter promptly, we have initiated the process to refund the excess amount back to you. The refund amount of [amount] will be credited to the original payment method you used for the transaction within [number of days]. We kindly request your patience during this period, as the processing time may vary depending on your financial institution. We understand that the inconvenience caused by our error might have disrupted your financial planning momentarily. In order to compensate for any inconvenience, we would be happy to offer you [discount, coupon, or any special offer] on your next purchase with us. This gesture is our way of expressing our sincerest apologies and demonstrating our commitment to providing excellent customer service. If you have further questions or concerns regarding this matter, please do not hesitate to contact our dedicated customer support team at [customer support contact details]. Our representatives are available [working hours], [days of the week], and will be more than willing to assist you with any further clarification or assistance you may require. Once again, we extend our deepest apologies for this regrettable error, and we appreciate your understanding and patience. We value your continued patronage and assure you that we have addressed the internal issues that led to this mistake to prevent any recurrence in the future. Thank you for being a valued customer of [Company Name]. We look forward to serving you better in the future. Yours sincerely, [Your Name] [Your Title/Position] [Company Name] Different Types of Sample Overpayment Letters for Mistake: 1. Sample Overpayment Letter to Customer for Billing Error 2. Sample Overpayment Letter to Customer for Accounting Mistake 3. Sample Overpayment Letter to Customer for Pricing Error 4. Sample Overpayment Letter to Customer for Order Processing Error 5. Sample Overpayment Letter to Customer for Shipping Error.