People call them "stealerships" for a very good reason.

BBB will be a waste of time. Call the Gee M customer care line < dealer will cringe at the thought of this, and will have to abide.

Tell them A. I wish to have my R/S working again (probably disabled due to battery disconnect)
B. I'd like a refund for the door actuator (charging you additional p&l to not fix the problem)

Unfortunately you will have to deal with the bastids as a Tech II is needed to diagnose/fix.

After that is resolved I'd advise finding another shop to get your ride serviced.