Bad service

I have been having peoblems with my alarm system for over a month now. Atlas says thwy sont receive signal from my radio they will get the technical department to give me a call. I had one callback after i phoned and complained about it. The technician came out and could not find anything wrong. Again the system was teated and still no radio signal. I have phoned twice again and they promised that technical department will phone me 2 weeks later again no call from them. Why must i pay for a system that doea not work 100% In the beginning they could not phone me enough to sell me the system now that they have me as a client i don't receive the service from them as promised. Like they say a new broom always sweeps clean. Now that they have me as a client they don't deliver on service.