Bad service with systems not in working condition

It saddens me 2 wright a second bad review again in 2 moths to report again on the tracking systems on all 4 of my cars incl the wireless systems not in working condition I phoned last week to report the wireless systems again on my cars . Cartrack call center promised me the tec deparment will make contact to schedule a maintenance apointment but it has been a week later not even a peep from any one at cartrack and now I find that all 4 of my cars not one system is in working condition why must I pay for systems that does not work how will I explain this to insurance if any of my cars should to be ****** or worse