poor service Pro Mechanics and RMI

i took my vehicle to Por mechanics for a door lock replacement. when i went to fetch my vehicle, the car had a bad vibration which they said was the engine mounting. this was totally unrelated to what i took my car for. they denied everything and i was so upset i left the vehicle and told them to fix what they broke. the car stayed there for another 3 weeks and they never attended to my car. after three weeks i decided to go fetch my vehicle and i discovered more damage. they fiddled with my engine covers, changed my gear knob, damaged engine rubbers and wheel arch cover. i complained with the RMI, and they are not serious at all. you have to beg these people to do their work.