Pathetic after sales service

I purchased a vehicle at the gezina central branch. After broken promises and constant calling and pleading from my side. I drove with an expired license and paper plates for more than a week. Eventually I got very frustrated, I had to call them and kick up a major fuss they delivered it to me the same day. It took them a month after I purchased the vehicle to get it sorted out. I was also promised my spare key with the documents, to my surprise there was no spare key also delivered. Till to date they have not called me to sort this out. One of the guys working there even told me that these guys dont care about you after you buy the car, only when you start making a noise then they will do something. I am not even going to attempt to call them as its a lost cause, I want head office to intervene and get this sorted out asap.