Discovery Insure - Vitality drive endless issues Unfair Point deducted

The discovery drive is an *********** department. I have had issues with the tracking device from the beginning. I have sent almost 20 mails to try and explain to them that the device seems to be faulty and every time they would shrug it off as if the problem is on my side. even though i'm doing everything right and all the relevant settings is on that needs to be on and the app does not record the trips consistently and then i'm being unfairly panelized and point deducted for uncovered trips. All they can say every time is that they see there is forced quitting. I make sure the app is open and running before i start my trip and when my trip is done, i see the app is still open. But yet the trip was not recorded or only part of the trip was recorded. Every time i log a query they just have some other excuse that I'm the issue, but not that there must be something wrong with the device. Because if i drive with my wife's car(being the secondary driver) the device records just fine all of the trips i do, so why does the one device record fine but the other one not. So there must be a problem, but discovery drive just keeps on denying that. And they are just not helpful in resolving any of my issues.