Faulty device and poor customer service

Dissapointed in cartrack nobody ever gets back to me from the relevant department. Had my device installed around November 18 worked okay for just under 2 weeks and has been faulty. Collections/finance department calls every other day, get power alert notifications every now and then follwed by calls but the ones that should be calling me regarding the repair have not attempted to call even once. I would like you to take out your device on my car i can pay whatever i have to pay thereafter. I do not want it anymore.