Dear [Company/Organization], I am writing to bring to your attention an issue regarding a duplicate payment that I recently made to your company. I have discovered that I unintentionally made two payments for the same service or product on [date of payment]. As a result, I kindly request a refund for the duplicate payment amount. I have attached a copy of the proof of payment, including both transactions, for your reference. The duplicate payment was made through [payment method], under the reference number [transaction/reference number]. The original payment was made on [date], with the same payment method and reference number. I understand that mistakes can happen, and I believe this duplicate payment was made in error. I would appreciate it if you could promptly investigate this matter and process the refund for the duplicate payment amount of [dollar amount]. Furthermore, I kindly request that the refund be issued to the same payment method and account used for the original payment. Please note that I have been a loyal customer of your company for [duration of the customer-business relationship], and I have always valued the quality of your products/services. Therefore, I trust that this matter will be addressed promptly and efficiently. If for any reason additional information or documentation is required, please do not hesitate to contact me at [your contact information]. I appreciate your immediate attention to this matter and look forward to receiving the refund for the duplicate payment within a reasonable timeframe. Thank you for your understanding and cooperation. Sincerely, [Your Name] [Your Address] [City, State, ZIP Code] [Your Contact Information] Types of Nebraska Sample Letters for Refund for Duplicate Payment: 1. Nebraska Sample Letter for Refund for Duplicate Payment to a Utility Company 2. Nebraska Sample Letter for Refund for Duplicate Payment to an Online Retailer 3. Nebraska Sample Letter for Refund for Duplicate Payment to a Financial Institution 4. Nebraska Sample Letter for Refund for Duplicate Payment to a Subscription Service Provider.