I’m an adjuster and although we’re only hearing your side of the story, it sounds terrible. Independent adjusters can be hit or miss. Some have chips on their shoulders for whatever reason. I work for a carrier, and I know we all strive to do a good job and be more than fair to our insureds and the shops, because really what is insurance if not good claims service? Better carriers(insurers) have their own claims team and only farm out if extremely overworked. Some smaller carriers don’t have in house claims or not enough. I suggest you ask your broker to shop around for those who have good claims departments. Good brokers should know who those are.