Bad Service and faulty part that does not last

This is about bad service and not getting feedback and parts i believe to be inferior,

This all started when i bought my Renault Sandero Stepway at Renault Tableview, From day one i had problems with the cars ( like the window tint that had to be redone 3 times ) after the first year the car started to develop a rattling noise , I took it in for numeris time on that and evry time there was a part changed but still that noise started.

No after taking it to them again and letting the service manager Shilton and his master technician drive with to listen to the noise, Shilton siad they will let me know when a loan car is ready for me , Now today is the 27-02-2019 and its been more than 2 weeks with no answer from them since last he contacted me to say they are still waiting for a loan car for me. This just show you how much they care for the clients who pay a **** load of money for cars that is supposed to work 100% . Not even mentioning the fact that i had to get my car's shocks changed 2 times due to it being worn out. AND I ONLY DRIVE ON TAR ROADS . so please tell me how is there parts good guilty o do they even relay change the parts ??

So i hope this will reach someone in charge so this can be sorted