Telsco was amazing. When I inquired about them taking over an existing system (in a house we just purchased), they were over to have a look within two days. The quote was in my inbox within a day after that and the install started the next week. Fast, professional, reasonably priced. I would recommend Telsco to anyone.
I also had a few questions after the install and my emails were answered in a very timely fashion. Another 5 star comment I have is that they asked me to complete a survey and with every completed survey, they donate $10 to the Ronald McDonald House. A great incentive to complete a survey. Other companies need to adopt this system. Excellent!