Customers treated with contempt (slap in the face)

I am writing this review with a heavy heart. I took my car to Steve's Auto Clinic in Centurion and i was expecting the best since SAC is one of the best in the automotive industry. To my disappointment i just received poor service, the service was actually below poor. There is a guy called Shane there i have a strong feeling that he dislikes customers. He doesnt have time for customers, i was tbe one to call and watsap him every now and then regarding the status of my car. He has the audacity to just ignore phone calls and when you watsapp him he just logs in for a few seconds after that he will remain offline the whole day. I informed him of my hearing problem and that i can't speak over the phone but it didnt help. I was forced to call him just to get his attention only for him to log in only for a few seconds on watsapp and log off without actually informing me about the car. Worst part i paid them over R6000 for changing the manifold gasket and injector cleaning. I am not sure if my injectors were cleaned indeed as my car still has power loss and jerking issues. I also discovered that the bonnet shock of my car is damaged after inspecting the car at home. When notifying Shane about this he totally became defensive and he said the damage did not happen in their workshop. He said i must pay R500 to replace the bonnet shock, just imagine the contempt? I mean there must be someone who is accountable for this, either the mechanic who was working on my car or some other staff member there. I regret taking my car there. No difference in performance and its like the injectors were not cleaned at all. I hope this reaches the correct people to intervene, it will not be good for SAC business. They dont care about the customers, its a sorry situation.