[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 — Duplicate Payment Dear [Recipient's Name], I am writing to bring to your attention a payment discrepancy that requires your immediate attention. On [Payment Date], I made a payment to [Company/Organization Name] for [Invoice/Transaction Number] in the amount of [Payment Amount]. Upon reviewing my records, I have discovered that a duplicate payment was mistakenly processed for the same invoice and for the same amount. Therefore, I am kindly requesting a refund of the duplicate payment. To assist you in addressing this matter promptly, I'm providing the necessary details below: 1. Payment Details: — Date of Duplicate Payment: [Duplicate Payment Date] — Duplicate Transaction/Invoice Number: [Duplicate Transaction/Invoice Number] — Amount of Duplicate Payment: [Duplicate Payment Amount] 2. Original Payment Details: — Date of Original Payment: [Original Payment Date] — Original Transaction/Invoice Number: [Original Transaction/Invoice Number] — Amount of Original Payment: [Original Payment Amount] I would appreciate it if you could thoroughly investigate this issue and initiate the refund process as soon as possible to rectify the duplicate payment error. I kindly request that the refunded amount be credited back to the original payment method, which was [Specify Payment Method, e.g., credit card, check]. Please notify me once the refund has been processed and provide any required documentation or reference number associated with the refund. If you require any further information or have any queries regarding this matter, please do not hesitate to contact me at [Your Phone Number] or via email at [Your Email Address]. I will be available to provide any additional details needed to expedite the refund process. I trust that you will address this matter promptly and efficiently. Furthermore, I appreciate your immediate attention to this issue and look forward to receiving the refund in a timely manner. Thank you for your cooperation. Yours sincerely, [Your Name]