Subject: Apology for Accounting Errors and Past Due Notices Dear [Recipient's Name], I hope this letter finds you well. I am writing to sincerely apologize for the accounting errors that occurred with your recent transactions. We understand the inconvenience caused due to the mistakes made by our team, resulting in the issuance of past due notices. I assure you that we take full responsibility for this oversight and are working diligently to rectify the situation promptly. At [Your Company Name], we strive to maintain a high level of accuracy and professionalism in our accounting practices, ensuring the smoothest experience for our valued customers. Unfortunately, on this occasion, we fell short of your expectations and for that, we deeply apologize. We have thoroughly investigated the matter and have identified the source of the errors. We have taken immediate corrective actions to prevent such occurrences in the future. Our accounting team has been retrained to enhance their skills and attention to detail to avoid similar mistakes going forward. To rectify these errors, we have adjusted your account to accurately reflect the correct balance owed. If you have already made a payment for the amount stated in the past due notice, please disregard it. We are working diligently to update our records and will issue you an updated statement reflecting the corrected balance soon. We understand how frustrating it can be to receive past due notices unjustly, and we deeply regret any inconvenience this may have caused. Rest assured, we value our relationship with you as our customer and are taking every necessary step to prevent this from happening again. Should you have any questions, concerns, or require further assistance to resolve this matter, please do not hesitate to contact our customer support team at [Customer Support Number] or reply to this email. We are committed to addressing your concerns promptly and providing you with the necessary support needed to resolve any outstanding issues. Once again, please accept our sincere apologies for the accounting errors and any distress this may have caused. You're understanding and continuous support are immensely appreciated, and we vow to earn back your trust through our improved accounting practices. Thank you for your patience, and we look forward to resolving this matter to your satisfaction. Sincerely, [Your Name] [Your Title/Position] [Your Company Name] [Contact Information: Phone, Email]