SAI (now Castle Rock) contracts out apparently for new enrollment and installation. My installation was performed by unqualified technicians and was done incorrectly. For the first six months of service (paying $50 each month) I had repeated "false alarms" without anyone ever having approached my house while I was out. These false alarms were costing me significant amounts of money, since I was getting billed by the city for them. After six months of complaining, probably more than 50 h of my time on the phone with their... read full review »