Never ending problems with Discovery

Last year I signed up with Discovery Insure for my car and household. Had the DQ Tracker installed but I constantly have problems with it. It works fine for 2-3 months and then some issue ALWAYS crops up. Then, I have to keep contacting Insure/DQ Department to try and get it sorted out because I'm losing score and therefore get a smaller cash back. Now, the device is no longer recording phone motion (I did the gyroscope test on my phone and no problems). And, another problem I've had three times now, is that the car displayed on the app is not mine! It shows a Citroen Pixcasa and I drive an Auris! Despite the DQ department contacting me over a week ago, I've received no feedback or assistance. My score is sitting at 7, even though I constantly get 5 star ratings. This is incredibly frustrating. Why do I have to keep following up and sorting this out and why does it take so long for the problem to be resolved??? I'm starting to not see the point of being insured with them anymore.