Subject: Request for Refund — Duplicate Payment Issue Dear [Company Name] Customer Service, I am writing to you regarding a recent issue with a duplicate payment made for [product/service] on [date]. I discovered that a duplicate transaction was processed on my account resulting in an overpayment. I kindly request your assistance in processing a refund for the duplicate payment. To provide you with the necessary details, I have outlined the key information below: 1. Account Information: — Name: [Your Name— - Account Number: [Account Number] — Email Address: [Email Address— - Phone Number: [Phone Number] 2. Duplicate Transaction Details: — Transaction Date: [Date— - Transaction Identification Number: [Transaction ID] — Duplicate Transaction Amount: [Amount] 3. Original Transaction Details: — Transaction Date: [Date] — Transaction Identification Number: [Transaction ID] — Original Transaction Amount: [Amount] I kindly request that you investigate this matter and process a refund for the duplicate payment promptly. I would appreciate if the refund could be credited back to the original payment method used for the transaction. If any additional information or documentation is required from my end, please inform me and I will provide it promptly. According to my calculations, the overpayment amount totals [Dollar Amount]. I kindly request the refund be issued within [specific timeframe, e.g., 7 to 10 business days] to avoid any inconvenience caused. Should you require any further clarification or have any questions, please feel free to contact me at the provided email address or phone number. I value your prompt attention to this matter and your cooperation in resolving this issue efficiently. Thank you for your understanding and cooperation. I trust that you will take the necessary steps to rectify this error promptly. I appreciate your attention to this matter and look forward to receiving confirmation of the refund processing. Yours sincerely, [Your Name] [Your Contact Information]