Bad service and faulty goods

I bought a Polo Vivo at Lindsay Saker, Alberton last year at around June. When I took it for the service around October, I was asked for a service book which I never received. When I spoke to the Sales guy who assisted me when I bought the car, he referred me to the gentleman by the name of Michael Greyling as he was no longer working there. I sent an e-mail to Michael who did not respond until i called him. His response was; cars do no longer come with service books but instead, everything is captured on the system and he is going to send me records of my car service. I waited and that never happened. I discovered (recently) that the back door as well as the boot of my car don't lock and I contacted Michael again, via e-mail and he never responded. My car is due for another service but there is still no records of previous services. Doors are giving me problems so it is only fair that i get assistance from the people who sold me the car.