I really think the only people you can talk to are CX - they really messed up badly if they didn't have people to meet you at the gate coming off F with a misconnect (as they saw it). Hotels should have been automatic. Are you absolutely sure that CX changed your flight? You only have AA's word for this as I understand it. Maybe they were covering up for the fact that you hadn't turned up at the airport at the point they did their "all and sundry up to first" routine and by the time they realised you were there they had no seats left for you and tried to dig themselves out of a hole.

Frankly I would trust CX to do the right thing in this situation rather than AA.