2 months with cartrack and i already regret it!!!

I got my cartrack installed on the 7th of May and every since it was never a good experience. This is the first time i ever got a tracking device installed on any of my vehicles but it was a suggestion on behalf of the dealership considering the amount of the vehicle. The device was fitted on my brand new vehicle prior to me picking it up. I then noticed that my mileage kept climbing on the app and upon investigation i established that the tracking device kept pinging random spots in my town, sometimes 3 roads below me. This concerned me and when i contacted car track after a month of getting the device newly fitted they then sent me on a run around even though they had said they will give me call to set up an appointment. Eventually a technician got to me and said he had replaced the device but low and behold this morning i was told it was repaired. Today- a month later i contacted car track to mention that the issue still persists and now there are 2 devices on my app and both are in different locations, and yes this is 1 vehicle, surely that shows the fault on the device? The service i received is pathetic they have rebooted the device and still the issue persists. Im stuck with you guys for a contract period but the service is not rendered to expectations? I have a faulty device that was installed in my vehicle. I only have this vehicle for 2 months yet car track makes it so unenjoyable. I totally regret taking this contract with you guys. If you can not honor your side of the contract please cancel my contract and i would rather choose a different service provider. 2 months with you guys and pathetic service