Gearbox poor workmanship

Mid November 2015 I took in my car VW as I had a problem with my gearbox it had locked the liver on 1 and had to be towed. VW kept my car for +- 3 weeks only got it back on the 15 Dec 2015. 31 January 2016 I had a breakdown as a result of the gearbox. I phoned the VW national call assist where I spoke to Carla from PE seeking assistance but I was advised my car was old and out of warranty, I then explained what was happening and that I still have a warranty for the work done 5 weeks prior the breakdown and requested she calls the service manager in charge in Springs which she did but the manager said I had no proof that my breakdown was because of their workmanship therefore until then its my responsibility to bring in the car on my own or I would have to pay the tow truck cash if they send one. I took the car in Monday 1 Feb 2016 where by they worked on it for 2weeks full and it was proved that it was their fault, got a courtesy car meanwhile thank you but no report or apology was given. Up to this day I have returned the car 4 times and today I took the car to Lindsayker Boksburg where they discovered oil leek due to sump plug left loose gearbox is empty and bearing damaged