no customer service

I am so disgusted by the response I have been given by Hillcrest toyota . My Golf 6 GTI which I purchased in November 2013 and which a friend of mine had introduced me to the salesman Dave as he had also purchased his car at the same time .The first incident I reported was the bumper which was not aligned and there was a black spot on the windscreen that look like a repair .After complaining the car was taken in and bumper sorted but the car returned with the black spot and worse damaged rims .I have purchased the car and to date have no service book .Later the battery went in a year of my purchase .The light mechanism when put on zero ,the lights still stay on and this is now my fault because i should have noticed this .I wrote to the DP and he never returned my call as he asked someone else to call me who never apologised and indirectly said it was my fault .The entire conversation has been recorded and now a dream car has turned into a nightmare .The chain of events that leads to this makes me sick .I now pay R6300 every month for a car I cannot use .I work in a service industry and we definitly dont treat customers like this .Remember word of mouth is crucial to the business.