Selling factory faulty vehicles

I trust all is well with you.In May 2015 I took ownership of a 2013 Polo GTI which I purchased at Culemborg VW in Cape Town, with the car having approx. 35 000km. Unfortunately, the car has had many factory issues since then which I have been struggling with over the past few months. Just a month after my purchase of this vehicle, I had a power steering issue where the power steering pump needed to be replaced, as there was no power steering. Unfortunately, I then had to drive with this vehicle for almost 2 weeks before the car could be seen to for power steering pump to be replaced. The reason was due to N1 City refusing to assist with swopping it out under warranty, and I was told to take the car back to where I bought the car. I then returned the car to Culemborg who then had the car for almost 3 weeks, as there was a dispute as to who would carry the costs of this power steering pump. I patiently waited for the repair of my car, as I was mobile with a loan vehicle from the branch.Exactly 3 months later; as my car is a DSG; I started encountering a gearbox issue, where the cars gears started slipping, as well as that the hill assist stopped worki