I have not had good service with Monotronics. If there is a problem with the system they are slow about having someone to call us to service the system. I made 4 request to receive a user manual. Each time I spoke with someone, I was assured that one would be sent and their records showed that a manual had already been sent. It was not until I said that if I could not get a manual I would discontinue the service, I received 2 user manuals by mail. My service has been out for two weeks. Still waiting for someone to call me. However I am sure that Monitronics doesn't waste time withdrawing the monthly fee from our account.