You can't make this up

Update on the damage to my truck. The insurance company sent me a list of approved repair shops. I went to three of them to get estimates and they were all within a few 100 of each other. The claims agent contacted me and said none of the shops want to repair my truck. I went to another shop and while the estimator was writing up the estimate, the body shop manager called me aside. He told me that many shops won't want to repair my truck because A. It is 25 years old, B. the parts are no longer available new and C. They don't want to have to scour salvage yards to get the used parts. I think this is a total crock of manure, my truck is a 3 owner truck that was in pristine condition with only 135,000 miles on the odometer before the shop rat drove it off the end of the lift. The aluminum diamond plate running boards are no longer offered by a lot of the aftermarket companies, but I found a company that still makes them. The body shops look at the quote I got and said, "we don't deal with internet businesses". I'm still scratching my head as to who I can get to repair my truck and still get paid by the insurance company.
Well, since you have the three estimates, can you just take the (insurance) check and "run"? Sucks to have to do it yourself, but at least that way you would know it was Done Right, by someone who had some skin in the game, as it were.