Dear [Customer's Name], We hope this letter finds you well. We regret to inform you that there has been an error in the shipment of your recent order. We deeply apologize for any inconvenience this may have caused and are committed to resolving this issue promptly. Upon reviewing our records, it has come to our attention that your order for [product(s)] was accidentally over shipped. We take full responsibility for this oversight and understand the inconvenience it may have caused you. Please be assured that we value your business and want to make it right. To rectify this situation, we would like to propose a solution. Firstly, we kindly request your assistance in returning the excess merchandise to our address mentioned below. Once we receive the return, we will initiate the refund process for the over shipped items. Please note that we will cover all return shipping costs and ensure a seamless return experience for you. [Company Name] [Address] [City, State, ZIP] To compensate for our mistake, we would like to offer you a [discount code/voucher] worth [X or EX] off your next purchase with us. This gesture is our way of apologizing for any inconvenience caused and expressing our gratitude for your understanding and continued support. Rest assured, we have taken immediate steps to address the issue within our internal systems to prevent a recurrence. We deeply value your satisfaction and will do everything in our power to ensure such errors are avoided in the future. Again, please accept our sincere apologies for any inconvenience caused. We genuinely appreciate your understanding and patience in this matter. Should you have any questions, concerns, or require any assistance, please do not hesitate to contact our customer support team at [phone number] or [email address]. We are here to assist you every step of the way. Thank you for your understanding and continued loyalty to our brand. Sincerely, [Your Name] [Your Title/Position] [Company Name]