Frustrated customer

My name is pertunia Ramokgonami.i bought my first car on 12/06/2020.from sales person named kabelo maubane.since then I still don't have my disc or no plates.yesterday I was stopped by traffic officer which they asked why I didn't have disc or no plates on my car.i explained that I am still waiting for Hyundai to provide me with one.they wrote a ticket for me.cause when I was with them I called kabelo and he spoke to officers.but the officer said he is so rude that I have to write a ticket for you. Kabelo is very good with sales but thats it.after that you will sort yourself out.i have been given the run around to dekkra where I would fail a test cause the is a problem with the car.i went to dekkra 3 times now and everytime I have to take my car to them. Right now I am frustrated instead of enjoying my new ride.please help cause I feel like taking back my car to Hyundai. If my car is failing dekkra (roadworthy )test which means Hyundai is about sales.customer satisfaction is zero.the worst part is the traffic officer said the permit on the car does not have stamp and is not registered.i went with my car to work today but my fear is now going back home cause I can be stopped by traffic officers.my question is why should i do the run around to dekkra using my own petrol.please help me.***