Worst service received from cartrack

Worst service that I am receiving from cartrack, since my unit was installed 3 months ago I am having problems with the app and the unit. I am now on my second unit and still having the same problem, reported to cartrack regularly but it seems that they can't get problem sorted out (maybe they must get someone from town to ger this sorted) carwatch is not working after it is activated (*****ing my own car without cartrack knowing it) phoneing cartrack to find out if alerts was received then the control room says no. Then cartrack says to me that the problem might Be the GPS signal, I was even in a different town and the very same happen, cartrack must take this unit out so that I can get a better company that can actually give a better service