Subject: Prompt Reimbursement: Return of Overpayment to Valued Client Dear [Client's Name], Warm greetings from our team at [Your Company's Name]! We hope this letter finds you in good health and high spirits. We wanted to bring to your attention a recent occurrence regarding your account with us. Upon reviewing our records, it has come to our attention that an overpayment has been made by you for the services rendered. We highly value our relationship with you and believe in maintaining transparency and fairness in all our transactions. As such, we are committed to rectifying any discrepancies promptly and ensuring that you receive the appropriate refund without any further delay. The overpayment occurred in relation to [specific transaction/date/details], and the excess amount currently stands at [exact amount]. Enclosed with this letter, you will find a refund check made out to you. Please review the enclosed check and confirm the accuracy of the refund amount at your earliest convenience. We kindly request you to promptly cash or deposit the enclosed check to reimburse yourself for the overpayment. Should you have any questions or concerns regarding this matter, please do not hesitate to reach out to our office through the designated channels mentioned at the end of this letter. As a token of our gratitude for your understanding and cooperation in this matter, we would also like to extend our sincere apologies for any inconvenience caused. Such oversights can sometimes occur amidst the complexity of financial transactions, but please rest assured that we have taken immediate action to rectify the situation and ensure it does not recur. We value your ongoing partnership and continued loyalty to our company. We remain dedicated to delivering exceptional services and maintaining the highest level of client satisfaction. Thank you for your immediate attention to this matter. We genuinely appreciate your cooperation and trust, and we assure you that we are always mindful of our clients' best interests. Wishing you continued success. Sincerely, [Your Name] [Your Position] [Your Company's Name] [Address] [City, State, ZIP] [Phone Number] [Email Address]