Not giving feedback on complain

We did buy the VW Polo Vivo in 2012 all new. From the start if you drive 100km/have or more the wind is leaking by the doors/windows. Every time when we complain about it they just a just the doors, then it is fine for a month or two then it's the same problem all over again. When we phone them with the same complain they say that we must bring the car in for them during the week so that they can see what is wrong. We need to take of from work and drive 350km to them and then they also do not have a car for us to use wile they work on your car. Now that the car is out off warranty they want us to buy new rubbers out of my own pocket. They do not have all the records of when the car were at VW for the same problem. After I told them we're not going to pay for something that is there fault. They told us that they will follow it up with the area manager and come back to me. It's know 3 weeks and no one phone us with any feedback. We did report the problem at VW South Africa and they said they are waiting for feedback from the service manager.