Golf breaking down

For the first few months after buying our 2009 VW Golf Comfortline TSI 118 we thought it was great, but then it started breaking down. First it needed a new piston, then a new gearbox brain computer, then a new clutch, new software and a few other things. It now needs new fuel-injectors and there has been a four-week wait for parts. I have tried to talk to VW but they just keep me going around in their call centre, so I am at a loss. The car is nearing the end of the warranty. After reviewing the Fair Trading act I have asked VW for a replacement car or my money back as this is what the act implies is the appropriate outcome for a product that does not meet expectations. The bottom-line is that this is not what you would expect from an expensive and new car. I noticed other owners have raised similar issues, what was the outcome from their complaints?