There are some shockingly bad bodyshops that are VW approved - "VW approved" is not a sign of assured quality. A lot can happen in 6 years, but 6 years ago Benfield VW bodyshop on Railway Street, Newcastle absolutely ruined my MK5 Golf GT Sport TDI 170 PD. A bus had given it a minor clatter at 2 weeks old. It needed 2 new bumpers, front grille, a new rear quarter panel on the drivers side, 2 new wheels and the rear drivers side suspension needed replacing as it was bent by the impact to the rear drivers side wheel.
They sat on my car for 5 weeks before they made a start, despite having all the parts after 10 days.
I picked it up in the dark in the pissing rain (not advised). Most of what was wrong with the car was not apparent until the morning. The top colour coat of paintwork was about 40% of the thickness it should have been and the wheel arch of the rear quarter panel rusted up every 3 months, they'd left metal swarf in the car form cutting in the new panel, the headlining was covered in oily handprints, the rear drivers side brakes didn't work properly (the car was dangerous to drive), and to top it all, some stuff that had been in the boot (a waterproof jacket, a tyre compressor and the top up oil that came with the car) were never seen again. Went back for lots of remedial work and there were plenty of other disgruntled customers with bodge-jobs.
The short of it is - i'd always rely on word of mouth/reputation for a good bodyshop over "VW approved" (although i'm not sure if GTI7me had much of a choice in their circumstance). Sounds like GTI7me's dealership is associated with a similarly bad paint shop.