Invoice No: 00001 Date: 01/01/01 Amount $496.31
Dear ***
I am writing with regard to payment of the above invoice, which according to our records, has not been received by us.
I would like to remind you that under the terms of our contract we are entitled to make a 3% interest charge on any balance outstanding after December 2008.
In order to avoid this, would you please arrange for payment to be made as soon as possible.
Thank you for your cooperation. We hope to continue doing business with you in the future.
Yours sincerely.