That is totally uncool and super scary. So glad for the long spiel you posted as it's the big picture which is the concern. I'm guessing but I'd say the dealerships are pissed off they have to service Opels all of a sudden, so they don't like them and we are an inconvenience. That attitude filters down to the mechanics, and if you are " lucky" enough to get a Redneck......it's Game Over dude!
Seriously glad your ride wasn't smashed eh. Catchya.