Repair damaged part

Cartrack technicians damaged my brand new car when they were busy installing the device.now my car is giving problems and it has been at the dealership were everything was confirmed and the proof that the cartrack guys are the one who damaged the BCM in my car.i have been waiting for their feedback since the 19th.when i call they tell me that the PIC department doesn’t have a direct line they only send emails and when i send emails they don’t reply.My car is now stuck at the dealership.This is so inconveniencing for me as i need to use the car on daily basis.