Car burnt while Kessel motors repairs vehicle

On the 17 of April 2019 I took my car to Kessel motors loop street, for a smoke repair and an oil leak ,I received a quote/invoice etc....From the garage which was a total of R10.000 for the repair of an oil leak that was running onto my exhaust coming from my turbo as they explained to me, needed to be repaired. I drove my car into the their garage and had to remove it from there property on a flat bed truck ,with a burnt engine compartment which happened while my vehicle was in there custody. They informed me about my car burning on the 23 April 2019, after what I believe is and can confirm ,that someone drove my car who is not even a mechanic. Yet the garage told me my car took alight when they took it for a test drive. But according to there staff ,the guy who took my car for a test drive was not even a mechanic, so I believe they took my car to go and collect stuff from there other garages which just happen to be the place where my car took alight. I was informed by Sandra and her RMI friend,I must come and remove my car they not going to repair it. Thank God and recorded them. I moved my vehicle to another garage and the repair for just the fire that happened while they drove my car without my permission, is R 32.000.This matter is pending legal action. Firstly, they had no right to drive my car out of the garage. Secondly, The guy who test drove my car was not even a mechanic Furthermore, they just told me to come and collect my car as they refused to repair it .I drove my car into there workshop and had to remove my car on a flatbed truck, which cost me an extra R1000.00 and the other garage is still waiting for parts to repair my car. After dealing with Sandra an extremely bad tempered manager.