Brand New Car broken Twice in less than 2 years.

After several correspondences with Menlyn VW dealership. I have reported my car that I bought brand new from them, in 7 months, the clutch was recorded worn out. I sent the car in for repairs and they fixed it for me, I was told to pay it myself, I was not happy with this and I argued about it. In few weeks after I have collected my car from them, they refunded me. Now in September, 1 year 7 months old, the car broke down again and I referred it to the same dealer I bought it from. I told them this car has failed clutch again. I told them they need to fix it on their cost, and/or buy this car back from me as this proves to be a yearly problem and they seem to know that this car has a problem but they won't be transparent about it to me. The dealership principal has changed in the dealership and there was no dealer principal to answer me, as the one I dealt with previous year just resigned. VW Menlyn refused to assist me whatsoever, they made me repair my car at R8000 in one of their dealerships, at silver oaks, and they told me they will never pay for this, and they will not take any responsibility to buy back the car. I was left stranded and forced to pay. WHY? Why do this to us?