[Your Name] [Your Address] [City, State, ZIP] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Address] [City, State, ZIP] Subject: Follow-up on Duplicate Order — [Order Number] Dear [Recipient's Name], I hope this letter finds you well. I am writing in regard to a duplicate order I recently placed with [Company Name] on [Order Date]. I have noticed that my order, bearing the reference number [Order Number], has been duplicated in your system, resulting in two identical orders being processed. First and foremost, I would like to express my appreciation for the prompt and efficient manner in which you have handled my initial order. However, the occurrence of this duplicate order has caused confusion and inconvenience for both parties involved. To clarify the situation, I have already received one set of the ordered items promptly, and they have met my expectations in terms of quality and functionality. Therefore, I kindly request that you cancel the duplicate order and refrain from processing it further to avoid any unnecessary complications. I value the professionalism demonstrated by your team and believe that prompt action will resolve this matter swiftly. To assist you further, I have included the necessary details pertaining to the orders below: Order 1: — Order Placed On: [Order Date— - Order Number: [Order Number] — Item(s) Ordered: [List of item(s) and quantity] — Total Amount Paid: [Amount Paid] Order 2: — Order Placed On: [Order Date— - Order Number: [Order Number] — Item(s) Ordered: [List of item(s) and quantity] — Total Amount Paid: [Amount Paid] I kindly request your attention to promptly process the cancellation of the duplicate order and issue any necessary refunds, if applicable, for the second payment made. I trust in your commitment to customer satisfaction and handling of such matters efficiently. Please consider this letter as a formal notification and kindly confirm the cancellation of the duplicate order in writing. If you require any further information or clarification, please do not hesitate to contact me via email [Email Address] or phone [Phone Number]. I look forward to your prompt response and resolution of this matter. Thank you for your understanding and cooperation. I hold your company and its products/services in high regard and sincerely hope this isolated incident will not affect our future business relations. Yours sincerely, [Your Name]