It appears that you were trying to take the check, which would likely be considered theft, and he grabbed you to stop you. Absent more, I don't see...

Being inappropriate is not a legal standard. If you are concerned, you can file a complaint with their supervisor.

This is a customer service matter, not a legal matter.

The 18 year old needs to discuss all of this with his attorney.

Generally speaking the answer would be no. Hopefully you were fully insured. Turn it over to them.

Your terms of use (that you clicked on when you bought your ticket) will limit their liability to the point that it won't be worth the money.

You can't sue over bad customer service.,,,,,,

You knew what he was going to do. You agreed. You can't win a lawsuit against him. Call your insurance company.

Only if part of an active lawsuit. Best to just move on with life.

Can I sue my ex-wife's attorney for prolonging our divorce causing financial and emotional distress? Not successfully.