[Your Name] [Your Address] [City, State, Zip Code] [Email Address] [Phone Number] [Today's Date] [Recipient's Name] [Recipient's Position] [Company's Name] [Company's Address] [City, State, Zip Code] Dear [Recipient's Name], Subject: Apology for Not Crediting Payment from Prompt Payer I hope this letter finds you in good health and high spirits. I am writing to bring to your attention an oversight that occurred on our part, resulting in the failure to credit a payment made by an exemplary prompt payer, as per our records. Firstly, let me express my sincerest apologies for any inconvenience or frustration caused by this error. We take great pride in providing excellent service to our valued customers, and it deeply concerns us that we have fallen short of our commitment in this instance. Upon conducting a thorough internal review, we identified that on [specific date], a payment made by [customer's name] in the amount of [payment amount] was not credited to their account. We regretfully acknowledge that this oversight was unintentional and solely the result of an internal processing error. We fully recognize the significance of promptly rectifying this situation and ensuring that the payment is immediately credited to the appropriate account. Thus, we have taken immediate action to locate the missing payment and properly allocate it to [customer's name]'s account. We assure you that this incident has prompted us to review and revise our internal processes to prevent similar errors in the future. Additionally, we extend our apologies to [customer's name] for any inconvenience they may have experienced as a direct result of our mistake. Rest assured, we have taken corrective measures to avoid any recurrence of such incidents. In order to make amends for our error and express our gratitude for their prompt payment history, we are pleased to offer a [discount on next purchase, gift card, free service, etc.]. We believe that this gesture will demonstrate our commitment to rectifying our mistake and maintaining a strong and satisfactory relationship with our valued customer. Once again, please accept our sincerest apologies for any inconvenience caused to you, your esteemed organization, and especially to [customer's name]. We appreciate your understanding and assure you of our dedication to providing exceptional service. Should you have any concerns or questions about this matter, I kindly request that you contact me directly at [your phone number] or [your email address]. I will be more than happy to provide any further assistance or clarification necessary to resolve this issue promptly. Thank you for your understanding, trust, and cooperation. We value your continued patronage. Sincerely, [Your Name] Keywords: Montana sample letter, apology, not crediting payment, prompt payer, oversight, error, internal review, inconvenience, processing error, rectify, customer account, internal processes, amends, gratitude, discount, gift card, free service, apologize, relationship, organization, dedication, resolution, assistance.