Bad service

I am getting called by cartrack attorneys to pay money when i still have unresolved dispute with cartrack. they messed up my car when trying to install a tracking device, then they towed the car to East London for repairs, they never paid for the repairs i had to pay for about R7500.00 to get my car back, because cartrack said it was not their fault as they feel the damage was not tracker related, but they never gave me a report about what was actually wrong with the car, as i was waiting for the report i get a call from their attorneys to pay the towing fees.