Bad service

I installed the tracking device in January ever since then I've never got a call even when the car is moving in rural dangerous areas, last week someone tried to open my car in a shopping complex and the alarm went off but they did not bother to call and check what happened. When I called today am told I'm not covered for calls when the alarm goes off so what exactly am I covered for while on the comprehensive cover of R246? I want to cancel your device the service is very bad even the app is not up to date it shows false locations and updates after a day