Dear _________________
Your ______________________ (name) Service Agreement has expired for the equipment that we installed on your premises. We have not received a remittance or a reply to our previous request for payment. Perhaps this was an oversight on your part, or perhaps your payment is in the mail.
If you have not sent us your payment, please forward your remittance within ________ days, or we will assume you do not wish to continue your Service Agreement.
Should you decide to terminate your Service Agreement, we will look forward to furnishing the same high quality service on your ________________________ (name) equipment at our currently hourly rate of _________________ (amount) per hour, plus parts and travel expense.
If payment has been made or if there are any questions in regard to your account, please contact me at _________________ (telephone no.).