Unprofessional and Pathetic service

I took my car for a service on the 23th of December and have ordered an engine cover which I asked to be installed. First I had to walk in the sun because they don't offer lift cars on weekends and they didn't tell me when I made a booking. Saturday I dropped my car after 2 to 3 hours they called me to fetch it, when I got there the cover they installed was wrong luckily I checked underneath, when I asked Sunil and Desigan told me the original part is discontinued and I knew they were lying . The way I was so angry I started crying when they realised I was fuming they told me they will make a plan they'll order another one , I had to walk again back to work and they said they'll call when my car is ready. All the parts that were replaced when doing a service were not in the car usually they put them in the boot. Also my car was making noise when I press the breaks and they told me I have to change breaks and they did but my car is still making noise. I don't trust they did a proper service after lying to me about the engen cover. When I told the parts salesman Desigan Maduray I'll report the matter he said I must go ahead and it the same person that ordered a wrong part and **** about the parts being discontinued. His service is pathetic and he doesn't know how to treat customers. It was the worst experience I've ever came across. I went back to report the case and I asked for head office email address the manager told me they don't have I have to call the call center.