Renew It Rivonia

I received my car back yesterday for a damaged Aircon. It was fixed. When I tried to drive it this morning an engine light came on and the car was stuttering and battling to go. When I called Brendel at Renew It, he said they fixed the compressor and nothing else was wrong. He said maybe my car needs a service. It was serviced in April. The have clearly damaged something. Their communication over the last two weeks has been very bad. My car has gone from a problem free car to not being able to be driven. Very disappointing.