Subject: Request for Invoice Confirmation and Resending

Dear [Recipient's Name],

I hope this message finds you well.

I am writing to request confirmation of the amounts for the attached invoice, which is covered by the proof of payment provided. Unfortunately, I am unable to locate the treatment details associated with this invoice.

Additionally, could you please resend the invoice without the proof of payment included?

Thank you for your assistance.

Best regards,

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