Tata Motors — Tata dealership service centre has caused damage to my newly owned safari

On Saturday 08/01/2022, I have taken my newly owned safari to Jagdalpur motors dealership to change my break pads. While taking the test the service guy has met with an accident with a bike. My car doors are on the left hand side has been badly damaged. Now the dealership is using my insurance to replace the vehicle which I believe should not be the case because I am not the one who has caused the damage to my vehicle. I expect some justice to be done on my loss.