Hey Guys! I had a client that one of my guys went to and fix some stuff. We spent a good deal of time there fixing his system because his system hadn't been on in a couple of years. He has an old mechanical Buckner Timer. He signed the invoice, paid us and we moved on. 2 days later he called and said that the system wasn't coming on with the timer in the mornings like it should have. We went out and looked at the program and it should have been coming on but had not. Sometimes on those Buckner Timers the microswitches go bad and they don't always come on. We have no way of testing that in the field we take it in to the shop. We also don't usually test the auto operation of a timer while on a service call. We told him it could be the timer but it would need testing in the shop blah blah blah........ He stopped payment on the check....337 and change. My question to you guys is this: How would you handle this Do you normally set a start time while you are on site to check the auto operation? We don't unless it is a digital timer and we can do it quickly. Do they really want us to sit for 1/2 to 1 hour and wait for the timer to activate??? He won't call me back now. Stop payments are not prosecutable in Arizona without small claims court by the way. He has said all that he wants is to get it fixed. My plan is to take it into the shop and get the timer fixed, reprogram and call it even. But.....should I make him pay cash? Credit cards are out because he can just as easily stop that transaction with VISA and I may NEVER get paid. What would you do? Thanks in advance.