Subject: Request for Invoice Copies

Dear [Recipient's Name],

I hope this message finds you well.

I am writing to request clear copies of the invoices related to my recent treatments. Unfortunately, I am unable to locate the treatment amounts and dates in my records.

Your assistance in providing these documents would be greatly appreciated, as it will help me ensure that all information is accurate and up to date.

Thank you for your attention to this matter. I look forward to your prompt response.

Best regards,

[Your Name]
[Your Contact Information]
[Your Policy/Account Number, if applicable]