I'm really surprised this hasn't been resolved by now. This is a black-and-white issue that should have been refunded expeditiously, particularly given the way it was handled at the gate.

One other thought on getting this matter expedited: call AA during business hours and ask to be transferred to the "RTW desk." Explain the situation in a friendly manner (they have a vested interest in the success of this program, too), and ask for their advice as to the next step you should pursue.