honestly steve (philmc) you would not believe this garage they are an absolute joke
when I took my car their for dsg issues, I explained to them the problem and that I thought it was most probably a faulty mechatronic unit.
they called me to say car was ready to collect, went in and they explained to me - yes you need a mechatronic unit but we will not cover it as you are modified - that I could live with - but when they placed a bill in front of me for £200 just for the tech to look at my car and diagnose a faulty mech unit which I had already told them was the problem - i told them to f$£k off -refused to pay and just walked out in the end
to top it off ever since that trip to the dovercourt my ipod link cable doesn't work so god knows how they messed that up when looking at the gearbox.... i don't risk going back though
steve30 just complain to VW HQ about them, I have complained by phone and also written - I would also use it as leverage to get a discount of your mk6
good luck