I am insurance broker and work with claims professionals all the time. Just a few thoughts: was it rippled before the accident? If so, do you have any photographic proof? Is the claim now closed? The adjusters don't know anything about your car or accidents. They rely in the professional opinions of the body shops. Try to get a letter from the body shop that did the work. Also, if you think you got screwed you can reach out to your state department of insurance for assistance. Hope that helps.
2007 SGM E90 335i
JB4 G4, Mr.5 Intake, VRSF 7" FMIC, ER Sport Oil Cooler, M3 Rep Bumper, RB PCV Valve, Cyba Scoops and Quad Tips, 17x9 ET30 and 17x9.5 ET35 Concave Apex Arc 8, M3 UCA/LCA