[Your Name] [Your Address] [City, State, Zip] [Email Address] [Phone Number] [Date] [Client's Name] [Client's Address] [City, State, Zip] Subject: Failure to Pay Account Balance and Proposed Withdrawal Dear [Client's Name], I hope this letter finds you well. I am writing to address a matter of significant concern regarding the unpaid account balance for your outstanding invoices. As per our records, there are currently [number of invoices] invoices reflecting a total outstanding balance of [amount] due for payment. We deeply value our business relationship with you and have always strived to provide exceptional services in a timely manner. However, it has come to our attention that despite multiple reminders and follow-ups, the aforementioned invoices remain overdue for payment. As a result, we regret to inform you that if the outstanding balance is not settled within [number of days] days from the receipt of this letter, we will be compelled to initiate the proposed withdrawal of our services and suspend any further work on your account, effective [date]. It is our sincerest hope that such measures will be unnecessary, and we can continue our mutually beneficial partnership. We understand that circumstances may arise that hinder prompt payment, so we encourage you to reach out to our accounting department at [phone number] or via email at [email address] to discuss any concerns or payment difficulties you may be experiencing. We are committed to finding an amicable resolution and working together to address any outstanding matters. Please be advised that failure to settle the outstanding balance or to contact us regarding a suitable payment arrangement within the specified time frame may result in further actions being taken, including but not limited to, implementing late payment fees or seeking legal recourse to recover the unpaid amount. We value your partnership and hope for an expedient resolution to this matter. If you have any questions or require further information, please do not hesitate to contact us. We greatly appreciate your prompt attention to this urgent matter. Thank you for your understanding and cooperation. Sincerely, [Your Name] [Your Title] [Company Name]