Oh thats gotta suck! I would be pissed too!
Sound's like he some how jammed the jack against the bottom lip of the body and bent it onto the door rail! Similar thing happened on my old van when they didn't adjust the hoist properly while getting new tyres fitted.
I always make sure i'm there to remind them of this now!
You will need a big screw driver and some multi grips to pry it back out! Then a big lump hammer to belt the crap out of the dude that stuffed it! just to make you feel better!
Hope you get it sorted Rex, i'm feelin for ya!
Good lesson though! Clean your own wheels next time you lazy bugger!