Where to start?

We have an Opel that have 27 000 km on. Of the year that we have had a brand new vehicle, we had it about six months of the year, the rest of the time it is standing to be fixed. The vehicle is giving a lot of problems, every time is the same. Every time I must drive 200 km to bring in the car

It's the brakes, the display screen have lines on it, the back windows go open by itself, the best, it's winding windows, not electronic. The rubbers are coming off. And the new thing, when you drive, it cuts off and all lights come on, switch off then you can drive on. The fuel consumption is not what they tell us, it's heavy on petrol use.  

They tell us to bring in the car and here is how they help us, the person we phoned telling us to bring in the car, they cannot tell us where, he is. But he tells us he is going to talk to us today. This all happened on Saturday 5/12/2015

Monday, they call me telling me they can't find a problem with the brakes. On Tuesday, they phone me again telling me they need to replace the brakes, it's only on 5%. ‎Today, they say everything is fixed and I can go and collect the car. Now I wonder how long till the problems start again

I will advice no one to buy a vehicle at Barloworld

‎I need advice to get these problems resolved, I am not happy.