[Your Name] [Your Address] [City, State, ZIP Code] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Designation] [Company Name] [Company Address] [City, State, ZIP Code] Subject: Apology for Not Properly Crediting Payment Dear [Recipient's Name], I hope this letter finds you well. I am writing to express my deepest apologies for the oversight made in not properly crediting the payment for the invoice [Invoice Number] dated [Invoice Date]. As a responsible customer of your esteemed company, I understand the importance of timely and accurate payment processing, and I sincerely regret any inconvenience caused due to this error. I take full responsibility for the oversight and want to assure you that it was completely unintentional. Upon reviewing my records, I realized that I mistakenly omitted to enter the payment transaction into my accounting system, which ultimately led to the non-crediting of the payment. Please accept my sincerest apologies for this oversight and any resulting delay or inconvenience it may have caused. I want to assure you that this mistake does not reflect my business ethics or commitment to fulfilling my financial obligations. To rectify this situation promptly, I have taken immediate action: 1. Making the Required Payment: Without any further delay, I have initiated the payment transfer in the amount of [Payment Amount] via electronic funds transfer (EFT). The funds should be reflected in your account within [Number of Days] working days. I kindly request you to confirm the receipt of the payment once it is credited to your account. 2. Investigating and Reviewing Internal Processes: To avoid any future occurrences of such oversights, I have thoroughly examined my internal payment processing procedures. I have implemented additional measures to ensure that such errors are not repeated, including [Mention any specific steps taken to avoid reoccurrence]. Again, please accept my sincerest apologies for the inconvenience caused. I value our business relationship and assure you that I am taking proactive steps to prevent any similar mistakes in the future. Rest assured, your satisfaction remains my top priority, and I am committed to ensuring seamless and timely payments going forward. Should you have any further concerns or questions, please do not hesitate to contact me directly. Thank you for your understanding and patience in this matter. Yours sincerely, [Your Name]