I had a similar experience with our local dealer.

Made an appointment for alignment at 1pm. They started at 3 left it on the ramp for more than an hour and told me that one of the rubber parts of the upper control arm was worn so they could not do the alignment.

Charged me $ 200 for it, pay or we keep your car.

I paid and wrote a letter to the management, got my money back with an apology.

Rob