So we're all curious. If somebody broke into the motorhome and tore it up than that's up to the RV owners insurance unless the shop was somehow negligent in letting happen. So I'm assuming the workers in the shop somehow did something to mess it up? Letting the Rottweiler in would do that I guess.
Reminds me of a war story. Back when I was a patrol cop many years ago on the midnight shift, somebody found a stray German shepherd in the back parking lot of the police department. As a joke they thought it would be funny to put the dog in the sergeants car. Well it would have been funny except the sergeant didn't leave the station until morning. When he went to get in his car he found the dog as well as the damage. The dog had chewed up almost everything. The seats, the radio, the emergency light controls, the steering wheel, the dash, etc. Something like $3000 damage to the car.