Dear …
RE: Account __(Reference #/ Name)__
In response to your billing inquiry of __(date)__, please be advised that we have now completed our investigation into your account. Outlined below is a detailed summary of your __(recent transactions/account transaction history)__ with __(name of organization).
Date Description $ Amount
__(Date)__ (Transaction description or payment) (dollar amount)
__(Date)__ (Transaction description or payment) (dollar amount)
__(Date)__ (Transaction description or payment) (dollar amount)
__(Date)__ (Transaction description or payment) (dollar amount)
_________
Balance Due $ amount_
Please review the above account history __(and the attached supporting documents)__ to verify that your records coincide with ours. If your records differ from ours and you still wish to dispute your billing, we ask that you provide us with the documentation that supports your case. Upon receipt of said documentation, we will further our investigation into your account. If we do not hear from you within __(# days/weeks/etc)__, we will assume that your records concur with the above account information and subsequently we will close our investigation file. Accordingly, we would ask you to forward your payment of __($amount)__ as quickly as possible to ensure your account is kept current with us. Thank you.
Yours truly,