Damn, that is a mess! Thank God we don't have to deal with rats here in Alberta; mice are bad enough. I'm with everyone else on this - between the rat damage, and the damage done by the service techs, the rig is a total write-off at this point and you should get your insurance company involved ASAP. At least have them send an adjuster to assess the damage. Unfortunately, I don't think this is going to get resolved anytime soon and could very well end up with the respective insurance companies dueling it out before a judge.

Best of luck to you. Please keep us updated on your progress.