Sorry to hear about your troubles and how your insurance company is treating you. I recently had a claim and the accident was totally my fault. Did some under carriage damage and my carrier treated me great. Sent an adjuster 2 days after I reported it, he looked at it, said take it to whoever I preferred and get a repair estimate. I sent him 2 estimates and received a check for the higher amount 4 days later. Less my deductible of course.
After you get through this, you may want to find a better company to insure with.