Bad service

I recently bought a Hyundai Venue 1.0T 3 weeks ago, from the Hyundai N1city branch. The service that I'm receiving is bad. the radio doesn't work properly, the reverse camera is faulty, there are lots of rattling on the body, the interior light doesn't work, the front tire and rim wobbles over 100km/hour, and that just a few of the faults. The saddest part, is that, this is my 5th vehicle bought from Hyundai N1city. The sales person says he is trying to get me sorted but nothing is happening. Last ever purchase from Hyundai N1city