DearOn (date) , this office mailed

Dear

On (date) , this office mailed to you a check
in the amount of $ per your (date) invoice.

After reviewing your file, I realized that this account
had been paid in full on (date) I am enclosing
a photocopy of our cancelled check # in the amount
of $

I would appreciate it if you would reimburse this office
for the duplicate payment. I apologize for any
inconvenience this error has caused.

Thank you for your prompt attention to this matter

ผลลัพธ์ (อังกฤษ) 2:

Dear On (Date), this Office mailed to You a Check. in The amount of $ Per your (Date) Invoice. After reviewing your file, I realized that this account. had been paid in full on (Date) I AM enclosing. a Photocopy of Check # The amount canceled in our. of $ I would Appreciate it IF You would reimburse this Office. for The Duplicate payment. I apologize for any inconvenience this has caused Error. Thank You for your prompt Attention to this Matter.