Every thing was fine until I rec’d the bill. Although the bill was a little high, it was not totally unreasonable, but I did have a few questions. When I called, I was transferred to the bookkeeper. When she came on the phone, she had a bad attitude and every question I asked was responded with«this was in the Service Agreement». It was very obvious she was not in any mood to explain anything to me. Maybe it’s just me but I like to know exactly what I am paying for and I think a company should be able to provide that information in a professional and polite manner. I had no problem with the technicians, except there were a few things on this bill that I know they did not do which I questioned and received no acceptable response. But they charge by the hour and mile so even though I know they did not perform all that was claimed, I was only charged for one full hour. If you do hire Electronic Entry Systems, I suggest that you do not give them your email. Even though I sent a check with receipt of the initial emailed invoice, over the next 3 days I rec’d a total of six emailed invoices. I guess they just keep sending invoices until they get paid. Geesh, it’s takes at least 2 – 3 days for a check to arrive if send USPS. If they are that afraid they are not going to be paid why wasn’t I presented with an invoice at the time of the repair??? But then they would not be able to figure out their complicated billing process which is after all in small print.