Subject: New Hampshire Sample Letter for Refund of Duplicate Payment — Request for Timely Reimbursement [Your Name] [Your Address] [City, State, ZIP Code] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Position] [Company/Organization Name] [Address] [City, State, ZIP Code] 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 inadvertent error that occurred during my recent payment transaction, resulting in a duplicate payment to your esteemed organization. I kindly request your assistance in resolving this matter promptly. Firstly, I would like to express my satisfaction with the services provided by your company. However, upon reviewing my payment records, I discovered that two payments were made for the same invoice number [Invoice Number] on [Payment Date]. The duplicate payment was unintentional and occurred due to an oversight caused by an error in the online payment portal. To rectify this issue, I kindly request a full refund of the duplicate payment amount of [Duplicate Payment Amount] to be returned to my account as soon as possible. I trust that your organization deeply values customer satisfaction and maintaining a transparent payment process. I have enclosed the necessary documentation within this letter to validate my claim, including copies of both payment receipts. The first payment receipt bears the details of the original transaction, while the second payment receipt confirms the duplicate payment. Rest assured, I have already taken the necessary steps to rectify this issue on my end. I contacted my bank to dispute the duplicate payment and comply with their instructions to pursue a refund through your company directly. Your prompt attention to this matter would be greatly appreciated, as it would help expedite the resolution process. In light of this occurrence, I kindly request a written confirmation of the refund initiation and the expected timeline for the reimbursement. It would bring me immense peace of mind to know when I can anticipate receiving the refund. In the event that there are any further requirements or additional information needed to expedite this refund process, please do not hesitate to contact me at your earliest convenience. You may reach me by email at [Your Email Address] or by phone at [Your Phone Number]. Thank you for your immediate attention to this matter. I look forward to your prompt response and full cooperation to resolve this inadvertent error and process the refund in a timely manner. Your prompt action will certainly reinforce my positive perception of your organization's commitment to customer satisfaction. Yours sincerely, [Your Name]