Subject: Sincere Apology for Accounting Errors and Past Due Notices Dear [Customer's Name], I hope this letter finds you well. We sincerely apologize for any inconvenience caused due to accounting errors and the issuance of past due notices. Our commitment to providing accurate and timely financial information to all our customers is of utmost importance, and we deeply regret any confusion or frustration caused by these mistakes. Firstly, we want to assure you that the accounting errors have been rectified, and our dedicated team has taken appropriate measures to ensure the accuracy and reliability of our financial records going forward. We have thoroughly reviewed our systems and procedures to prevent such errors from occurring again in the future. Rest assured that this incident has served as a valuable learning experience for us, and we are determined to improve our services. Regarding the past due notices, we acknowledge that some customers may have received them in error. We apologize for any undue stress or concern caused by these notices. Again, we have carefully examined our records and identified the root cause of the issue. Our team is working diligently to correct the mistakes and update our records promptly. At [Company Name], we value our customers and appreciate your patronage. It is never our intention to let our accounting errors or processes create any inconvenience for you. We understand the importance of maintaining a strong working relationship and strive to rectify any mistakes as soon as possible. In light of the inconvenience caused, we are waiving any related late fees, interest charges, or penalties that may have been incurred. Our priority is to ensure your satisfaction, and we want to assure you that we have taken steps to prevent similar occurrences in the future. Once again, please accept our sincere apologies for any inconvenience caused by the accounting errors and past due notices. We appreciate your understanding, and we look forward to continuing our business relationship on a positive note. If you have any questions or concerns, please feel free to contact our dedicated customer service team at [Phone Number] or [Email Address]. We are ready to assist you in any way possible. Thank you for your understanding and cooperation. Sincerely, [Your Name] [Your Title/Position] [Company Name]