Shoddy workmanship

As a woman, I have not always had the best service from mechanics and have often been charged for work that was not done etc etc. I have seen that often I am charged for a light bulb for a car which inflates my final bill. As my car needed a major service, I took it to Meyers Delta workshop. Before taking my car there I checked to see if any light bulbs needed to be replaced but I could not see any. Meyers were very attentive and professional and called whenever they needed to ask if they could do anything extra. I did receive a call about the light bulb but I said not to fix it. When I fetched the car they informed me that the light bulb had been replaced at no extra cost. However, as I was driving home, at the first robots my car was not idling properly and kept on feeling like it was going to cut out. I immediately went to the nearest shopping centre and called Meyers. I was told to bring the car in the next day. I left the shopping centre and could not even drive 5 meter further when at the next robots the car stopped altogether. It was fortunately early in the afternoon. I called Meyers and eventually two mechanics came. I received no apology no further follow up calls. The mechanics just plugged something in and the car started. I was not expecting a major service, which was not cheap would result in my car not starting. The fact that they would allow my car to leave their workshop and then break down is not acceptable.