Poor service- fault DQ track unit and lack of promised follow up

I have had my vehicle insured with Discovery since purchase in 2021. It's my primary vehicle, which is still under manufacturer warranty.Recently it would not start, and was towed to Toyota. Their analysis showed the battery was drained by the Discovery tracker unit. This is the same issue that I experienced on two other vehicles no longer insured on Discovery. At the time, it was described as a fault of the tracker unit, and was explained there wasn't a way I could have prevented it.On reporting this last Thursday, the Discovery Insure consultant told me to expect a call from C-track the next morning. I received an automatic email asking me to make ana DQ Track appointment. But, the consultant assured me that I was not to do anything else except wait to be caled, since he acknowledged that the car would not start, and this was extremely urgent. By Friday afternoon I'd still not heard anything. So, I called back. The consultant I spoke to said she'd have to talk to the person who previously assisted me, and I would get called back. It's now Monday afternoon, my car is still undriveable, and I've not had any feedback from Discovery.I've gone ahead and made an appointment the DQ track appointment (3 days from now), but I'm really irked that: 1. There is a recurring faults with these tracker units that result in me being unable to use my vehicles, and damaging a perfectly good battery (and potentially other components?) 2. It takes upwards of 20 minutes on each call to Discovery to get through and explain the issue, only to receive false feedback that I will be called to get assistance. A waste of my valuable time.