15,000km Service Cost from Each Dealer Outlined

[aVex]

Oh....almost forgot....when I picked my R up after service, it was pretty clear that someone had taken it for a joy ride as they changed my DCC setting to Sport when it was in Comfort on drop-off

I think that's an assumption that they've taken your car for a joyride. Not trying to defend them, but after servicing to many VW's I doubt they have the interest still to take your car for a joyride. Setting the DCC switch isn't conclusive of that as well, what if they just needed to test all soft switches to ensure they are performing?