Poor customer service

I have laid a complaint with nissan hatfield regarding my car that was brought to them for a major service in Nov 2020.

After collecting the car from their dealership, I have discovered that there was a strange noise that was never there prior to the service. I immediately reported the matter to their dealership and I was told that I am going to be liable for the charges once they take the car back for checkings. One of their guys drove with my husband and hinted that the noise could be coming from the turbo and they have never touched anything related to the turbo during the service. He further mentioned a lot of money for fixing, and we didn't have that money.

We then left with the vehicle as it was since we didn't have money as we had just paid for the service which we doubt that they have done, until we managed to take it to someone else on the 11th of Sept 2021 only to discover that the fault lies with their dealership. The air pipe leading to the turbo was loose, it was only fastened on one side and one nut was missing, without even placing the gasket back on. We drove the car that was not performing for a period of 10 months due to their negligence. All they were offering was a R200 discount on my next service as a way of apologizing, I am expected to pay them thousands of rands for my next service as if I still trust them with my vehicle. That's an insult. I am very annoyed with them and I want people to know how cruel they are. They do not take clients serious. BB Nissan Hatfield big ********!!!