Renault taking advantage of their customers

My car was booked in for a service on 25 March 2021. I highlighted that the car had the injector warning light on, that they must follow up on the problem. I was told that the injector problem was fixed only to see it displaying when I get home, less than 5 kilometer away from your Fourways dealership. That car was booked in a day later. The car has not been repaired nor has Renault bothered to keep me up to date with the progress of my car. I called again on 15 April, only to be told by some guy who couldn’t be bothered to ask for my details that the service manager was in a meeting. I called again on 16 April, the lady who booked my car told me that she was on leave, she will check. This is unacceptable. No one is bothering to give me a courtesy call to tell me what’s happening with my car. The service was excellent when they were selling me the car but the service is terrible when they have to fix their car. I am heavily pregnant, I need my car more than ever now.