It's all been said.
Go in cool. Look over the damage to the car. Do not let them work on the car without you seeing it.
Tell them no transmission will even let you push the lever into a gear. It grinds all to hell.
Ask to see the toolbox as it probably was dented pretty good too.
If the story holds up and damage it not significant (no frame or engine damage), let them fix it and be on your way. Never return to the dealer.
If the story falls apart, I don't know what to tell you. SVT's are getting hard to come by so replacing it might not be an option for you. But if there is something else on the lot that peaks your interest, inquire.
Aaron