Chery SA worst service ever experience, Tigo Pro 8 in workshop for over a month and still done know whats the problem

My Chery Tigo Pro 8 Max battery died and was replaced which took chery fourways 2 days for a replacement taking inconsideration that I've also took out an additional motor plan when bought the car. The car drove for 1 day and the next day it didn't start, it's been more than a month and Chery still don't know what the problem is. I have not been offered a courtesy vehicle until I asked, but on top of that they want me to pay insurance on the loan vehicle. My car only has 34000km +/- on, I have explained the situation that my I needed a second car home because my son is disabled and lives on life support for emergencies. This has been the worst experience every from a motor company that I have received. This is completely unaccepted and irresponsible where chery has no clue what they doing or able to pin point the problem. I still don't have my car back and has created so much stress as I always to be away from home to clients.