Dear [Customer's Name], I am writing to sincerely apologize for the oversight in failing to credit your recent payment, dated [Payment Date], to your account. I understand and acknowledge the inconvenience this has caused and assure you that we are taking immediate steps to rectify the situation. Upon reviewing our records, it has come to our attention that an error occurred within our payment processing system, resulting in the failure to credit your account with the full amount of [Payment Amount]. This mistake is entirely unacceptable, and we deeply regret any frustration or inconvenience caused as a result. Please be assured that we have identified the issue and have taken the necessary actions to ensure that such errors do not occur in the future. Our team is diligently working towards resolving this matter promptly, and we will make sure to credit your account for the full payment as soon as possible. To compensate for the inconvenience caused, we would like to offer [Compensation Offer], as a token of our appreciation for your continued support and understanding. We value your business and want to ensure that we maintain the excellent customer service that our company prides itself on. Once again, please accept our sincere apologies for any inconvenience caused by this error. We genuinely appreciate your understanding and patience while we rectify this matter. If you have any further questions or concerns, please do not hesitate to contact our customer service team at [Customer Service Contact Information]. Thank you for your attention and understanding. We apologize for any inconvenience caused. Sincerely, [Your Name] [Your Position] [Your Company Name] [Your Contact Information] Keywords: San Jose, California, sample letter, apology, not crediting payment, error, oversight, inconvenience, compensation, customer service.