Originally Posted by
fotographer
Call AA and don’t hung up until you get what you want
Which needs to be a seat assignment that you can see on the app or online.
The only time this happened to me, the person on the phone said "don't worry you still have a seat in J, they will give you your seat assignment at the gate."
Of course the seat they gave me was in Y. I couldn't wait for any other flights due to work, so was forced to accept.