Subject: Sincere Apology for Not Crediting Your Prompt Payment — Bexar, Texas Dear [Customer's Name], We hope this letter finds you in good health and high spirits. On behalf of [Company/Organization Name], we would like to express our sincerest apologies for the oversight in properly crediting your recent prompt payment. We understand the inconvenience this may have caused and want to assure you that we take this matter seriously. As an esteemed customer of ours, your promptness in settling payments has always been appreciated and duly recognized. However, due to an internal error in our account reconciliation process, your payment was not appropriately credited in a timely manner. We deeply regret any confusion or inconvenience this may have caused. Please be assured that this matter has now been rectified, and your payment has been properly credited to your account, including any late fees that were erroneously applied due to the delay. You should now see that your account balance accurately reflects your payment history. We understand that trust and accuracy are of utmost importance in maintaining a successful business relationship. Our team has taken immediate steps to revise our processes and implement additional checks and balances to ensure that such oversight never occurs again in the future. We value your continued patronage and would like to reassure you of our commitment to delivering exceptional service, both in terms of the quality of our products/services and our financial processes. To compensate for any inconveniences caused, we would like to extend a [X discount/Voucher/Service upgrade] on your next purchase or service renewal. Your dedicated account manager will be in touch shortly to discuss the details and ensure you are well taken care of. Once again, please accept our sincere apologies for any frustration or inconvenience this may have caused. We appreciate your understanding and patience in this matter. Should you have any further concerns or questions, please do not hesitate to contact our customer service team at [Customer Service Phone Number] or [Customer Service Email]. Thank you for your understanding, and we look forward to serving you with the exceptional service you deserve. Sincerely, [Your Name] [Your Position] [Company/Organization Name] [Contact Information]