[Your Name] [Your Address] [City, State, ZIP] [Date] [Debtor's Name] [Debtor's Address] [City, State, ZIP] Subject: Collection Notice for Unpaid Bill Dear [Debtor's Name], I hope this letter finds you well. I am writing to bring to your attention an unpaid bill in the amount of [Amount Owed], which is long overdue. This outstanding balance pertains to [Description of Goods/Services Provided], which was rendered by [Your Company/Organization Name] on [Invoice Date]. Despite our numerous attempts to contact you and discuss this matter, we have not received any response from you nor any payment towards this overdue amount. As a result, we have reluctantly escalated this issue to the collection stage. We understand that unforeseen circumstances may have caused a delay in payment. If so, we kindly request that you provide us with an explanation and a practical plan for settling this account to avoid further consequences. Please note that any further delay in payment may result in additional charges, such as late fees, interest, or the involvement of third-party collection agencies. We highly recommend taking immediate action to pay the outstanding amount within [number of days, e.g., 15 days] from the date of this letter. To facilitate prompt payment, we have enclosed a detailed summary of the outstanding invoice, including a breakdown of the charges and the total amount due. Payment can be made through various methods, including: 1. Credit Card/Debit Card: Please fill out the enclosed payment authorization form and return it to us. 2. Electronic Funds Transfer (EFT): You can initiate a payment directly from your bank account using the provided banking details. 3. Check/Money Order: Make the payment payable to [Your Company/Organization Name] and mail it to the address mentioned above. 4. Online Payment Portal: Visit our website [Website URL] to make a secure online payment using your credit/debit card. If the outstanding balance has already been settled or if you believe there is an error, please contact us at [Your Phone Number] or reply to this letter within the stipulated time. Please take this letter as a final notice before we pursue further legal action or enlist the services of a collection agency. We genuinely value your business and hope to resolve this matter amicably. Thank you for your immediate attention to this issue. We trust this matter will be resolved promptly, avoiding any further inconvenience for both parties. The Sincerest regards, [Your Name] [Your Title] [Your Company/Organization Name] [Phone Number] [Email Address]