Tracking unit draining battery again

I have been a little more than a year with cartrack. Within the first few weeks i had issues where my battery was drained and found that it was a result of 2 faults. 1 being cartrack device related. Then in December 2021 roughly 8/9months later i started having the same issue where my battery is flat the after standing a day or 2. Started by disconnecting my sound system to see if that was possibly the issue. Did numerous tests and even went to do a warranty on the battery and after 2 days the new battery was flat which told me it was not the problem, had wiring checked and found no faults of a current draw. Noticed that my tracking unit is constantly on charging status as the battery/unit charge is always on 90%. Spoke to a Bongani last week whom was going to escalate a ticket to technical to attend to the matter, spoke yesterday to a lady in account who was going to escalate it again as an urgent matter. I have now incurred damage to a battery,a starter as a result of the battery being drawn flat, also damage to my engine as a result of having to push start the vehicle on the cold mornings. Cartrack was informed from the start that i hardly drive my car at most 500km a month, so they were aware that a normal unit/battery for their unit would not be sufficient and cause problems later down the line ,but they still fitted standard unit. Also still no phone call from technical to resolve the issue and to tell me what they going to do with regards to my damages i have suffered. Should Cartrack not have the unit sorted as well as a plan to resolve my damages by 5pm today, i will go ahead and rip out their unit and post it to their offices and then they can cancel my contract with them as this is the second time in just over a year their unit is causing a current draw on my battery.