So I've got these deadbeats that I did tons of work for last year. A couple in their late twenties, live in a huge house, both drive brand new BMWs. I sent them a bill in november for the work done for the previous few months and never heard anything. I've contacted them monthly since then and they keep saying that they owe less than the 500.00 they were billed for. I tell them all i need is some proof of payment - they keep saying "ill mail it to you." but i never get anything. Now last week they are saying I didnt even do the work. I have not mentioned collections or late fees to them in the past but feel that i have contacted them enough to go straight to it. Please give me some suggestions on this letter or anything else I should do. Thanks. Mr. and Mrs. Edwards, As you know, our company did a substantial amount of work in your yard last year. It has been several months and the work still has not been paid for. I have contacted you several times and received no cooperation in resolving the issue. I have not received any proof of previous payment or even a phone call. The easiest way to resolve this matter is to provide proof of payment so that the current balance can be adjusted, then paid in full. For your convenience I have included a self addressed, stamped envelope. If this matter has not be resolved by August 1, 2007, I will send the bill to collections and small claims court if necessary. You will then be responsible for paying the amount owed, a late fee, and any processing or court fees.