Bad service

I bought a car on the 25th March 2015 from GM WestVaal Jacaranda in pretoria, I collected the car on the 28th March 2015, on the day I collected the car there were few things that were not up to standard, I approached the sales person and gave him a hint regarding the break light however he said I must bring the car back dthe during the week for the light to be replaced. When I got home I realised few things that they promised to fix but still in the same condition including the brakes I then took back the car on the 30th March for it to be fixed. They kept my car for weeks until the 17th April, when the car was returned I phoned back to advice them tht 90km service was not included however they told me tht they will email me the service for 90km, I rcvd the history but it was dated the 23rd of April however my car was delivered on the 17th of April. on the 4th June my car just stopped in the middle of the road without any warning I phoned the tow guys to help me, they checked the car and I was told tht they suspect over heating. I drove the car for 3000km, my car papers states tht my car is manual but is not, I am driving an auto car. Still relying on public .... unhappy client