Why did they tow you, Is it a no parking area or do you not display your pass or something? In VA at least I know that they are pretty much not responsible for damages to your car from the tow if you were breaking the law. If they tow it improperly like put it on and it falls off or something that's a different situation. But any damage to the car from a proper tow (ie: you leave the car in reverse so it can't be towed, or locking your wheel, etc etc) then you are responsible for the damages yourself...