My car was crashed

MacCool

I would absolutely be there for the insurance adjuster's appraisal, and I would absolutely videotape his entire appraisal process. In the event you go to court, one of the first things you have to do is be able to negate that adjuster's appraisal. If you can provide video that shows it to be cursory, so much the better. If you are polite to him on camera and he ignores your, or better yet is rude to you, that's also to your benefit when a judge ultimately gets to see the video.

If you don't want to hold a video camera while he's appraising, rig one up in a discreet place (make sure your state is a one-party consent state).