Subject: Apology for Accounting Error and Ensuring Prompt Resolution [Your Name] [Your Title] [Company Name] [Company Address] [City, State, Zip Code] [Email Address] [Phone Number] [Date] [Customer Name] [Customer Address] [City, State, Zip Code] Dear [Customer Name], RE: Apology for Accounting Error and Ensuring Prompt Resolution I hope this letter finds you in good health and high spirits. I am writing to you today to sincerely apologize for an unfortunate accounting error that occurred in our records, resulting in an inaccurate billing statement for your recent transaction with [Company Name]. At [Company Name], we strive to maintain utmost transparency and accuracy in our financial dealings with our valued customers. Regrettably, an inadvertent error within our accounting department caused a miscalculation, leading to the erroneous billing statement you received. We deeply apologize for any inconvenience, frustration, or confusion this may have caused you. We understand the importance of maintaining customer trust and satisfaction, and I assure you that immediate action has been taken to rectify this issue. Our diligent team of accounting professionals is actively working to correct the error promptly and update the billing statement to reflect the correct and accurate amount. You can expect to receive the revised billing statement within [mention a reasonable time frame]. Moreover, I would like to extend my personal assurance that the issue has been addressed internally, and necessary steps have been taken to prevent such errors from recurring in the future. We have conducted a thorough review of our accounting processes and have implemented additional checks and balances to ensure the accuracy and reliability of our financial records. As a valued customer, it is of utmost importance to us that you are completely satisfied with our services. We understand that our error may have caused you inconvenience and frustration, which is why we would like to extend our sincere apologies by offering you [offer appropriate compensation, discount, or any other suitable resolution]. We highly value your trust and appreciate your patience and understanding during this unfortunate situation. Our dedicated customer service team is available to address any concerns or queries you may have regarding this matter. Please do not hesitate to reach out to us at [customer support contact details]. Once again, I sincerely apologize for any inconvenience caused, and rest assured, we are committed to resolving this matter promptly. We truly appreciate your understanding, and we look forward to serving you better in the future. Thank you for your continued support and for being a valued customer. Yours sincerely, [Your Name] [Your Title] [Company Name]