Dear [Customer Name], We hope this letter finds you well. We are writing to address a recent accounting error that occurred in our systems, causing some discrepancies in your account. We sincerely apologize for any inconvenience this may have caused and assure you that we take full responsibility for this oversight. As valued customers, your satisfaction is of utmost importance to us. We understand the impact that accurate and transparent accounting has on establishing trust and maintaining a strong business relationship. Unfortunately, due to an internal error, we failed to document a transaction properly, leading to the current discrepancy in your account. Rest assured, we have identified the issue and have taken immediate corrective measures to rectify the situation. Our accounting team has thoroughly reviewed all affected accounts and made the necessary adjustments to ensure the accuracy of your financial records. To rectify this error and make it up to you, we will be crediting your account with the correct amount, including any additional charges or interest incurred during this period. The adjustment will be reflected in your next statement. We understand that this mistake may have caused frustration and inconvenience on your end, and we deeply regret any stress or confusion it may have caused. Please be assured that we have taken this incident very seriously and are implementing additional measures to prevent similar errors from occurring in the future. At [Company Name], we pride ourselves on providing exceptional customer service and maintaining the highest standards of professionalism. We deeply value your loyalty and trust in our organization, and we will make every effort to ensure that such errors do not happen again. If you have any questions or concerns regarding this matter, please do not hesitate to contact our customer service team at [Customer Service Number]. We will be more than happy to assist you and provide any additional information or clarification you may require. Once again, please accept our sincere apologies for any inconvenience caused. We appreciate your understanding, and thank you for giving us the opportunity to rectify this error promptly. We look forward to continuing our business relationship with you. Yours sincerely, [Your Name] [Your Title] [Company Name]