[Your Name] [Your Address] [City, State, ZIP] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Address] [City, State, ZIP] Subject: Request for Refund for Duplicate Payment Dear [Recipient's Name], I hope this letter finds you in good health and high spirits. I am writing to bring to your attention an issue regarding a duplicate payment I made to your esteemed organization. I kindly request your prompt assistance in resolving this matter. Furthermore, I recently noticed that I made a payment twice for the same service on [Date], causing an overpayment of [Amount] to be reflected in my account. Upon reviewing my financial records, I realized that this error was unintentional and arose due to a technical glitch or oversight on my part. To rectify this situation, I kindly request a full refund of the duplicate payment amounting to [Amount]. I have attached copies of the relevant payment receipts for your reference and verification. I believe that my diligent monitoring of my financial statements highlights my commitment to financial responsibility and integrity. In light of this situation, I kindly request that you process the refund without delay. The reimbursement can be made either by [preferred refund method], or alternatively, you may credit the excess amount towards future payments depending on your organization's policy and discretion. Please note that I have been a loyal and satisfied customer of your organization for [duration]. I have always appreciated the excellent level of service provided by your staff, and I trust that this matter will be resolved swiftly and efficiently. I have the utmost confidence in your commitment to customer satisfaction. Furthermore, I eagerly anticipate your positive response and early resolution to this matter. If you require any further information or clarification, please do not hesitate to contact me at your convenience. Thank you for your timely attention to this matter. I look forward to receiving the refund promptly. Yours sincerely, [Your Full Name]