Unhappy about the service

Took my car for car service at Barloworld Zambezi gave them my car key which was in a good condition but to my surprise when i went to fetch my car the next day my car key was not in a condition that i handed it in.It was torn as if someone was using a sharp object to press on the key,the rubber was torn.I told the manager Jaco Steyn that my key was not all torn up and he really could not help me.I lodged a complain with customer service and till today there is no reply from anyone. Did i really pay R4090.10 for them to damage my car key?? such pathetic service from Barloworld Zambezi I am so disappointed