Subject: Update on Your Unpaid Bills

Dear [Recipient's Name],

I hope this message finds you well.

I wanted to inform you that we have sent your unpaid bills to the relevant team for processing to the provider. We are actively working to resolve this matter and will keep you updated on any progress.

If you have any questions or need further assistance, please do not hesitate to reach out.

Thank you for your patience.

Best regards,

[Your Name]
[Your Position]
[Your Company]
[Your Contact Information]