Renault — Car audio and dashboard damaged when returned after servicing

Had given the car for servicing at jogeshwari highway renault centre mumbai . Found audio not working and dashboard damaged. Had given a complain the next day itself after noticing it, call the car again to resolve the same, but returned back saying it was already damaged at the time of giving for servicing.
The car was checked and was in good conditon at the time of giving for service
Mail sent to mr mandar tambe (Service manager)
Spoken to mr manish (Service coordinator) incharge of the job servicing

Mr sanjay doshi
Cell no 0 [protected]
Email [protected]@yahoo.In