Worst customer service experience

A new device was installed when I took up the fleet tracker March 2019. I refer to new as a new customer I expected it to be new. Once device was installed I received power failure alerts of which I advised that I'm not experiencing any power failure. I was told the repair department will phone me and nothing happened. I was involved in an unforseen mishap last year and reported it and was advised I can activate my carwatch service on the app and they will inform me as soon as the vehicle has moved. The vehicle was in transit for more then an hour before I realised the carwatch is still activated once again I contacted cartrack and explained I spoke to the supervisor as well as the manager who assured me they will book a repair and all of a sudden a technician as booked. A week later the power failure alerts started again I explained to the agent that a technician was just dispatched and confirmed it was resolved. On the 12 September I was informed they I'll receive a call from the repair department and till date have not received a call or a technician being dispatched. When I phoned today to request feedback I was informed the power alerts has been bypassed since September. I was also told I received a call yesterday from an agent and I confirmed all is working when I requested the recording of the call as I did not receive one I was told nobody called me but the unit was tested and the case was closed however the power failure alerts is still bypassed. I have received the worst customer service from cartrack and don't feel happy paying for a service where I'm being **** to. I spent an hour on the phone just to be told once again 4 months later that I'll be receiving another call from the repair department. I haven't even been with cartrack for long and the customer experience is the worst. Cartrack is the worst tracking service provider I regret installing it in my vehicle as all I had was problems and lies.