that's exactly what I thought after hanging up with agent # 2. he just kept saying "what is going on in Argentina?, all I see in the system are zeros, there are no flights until your return on 07/13"
he also mentioned waiting a bit until AA updates the flights and that's when he insisted on having me HOLD another flight, go for the refund and purchase the aforementioned HELD ticket.
I don't think you should cancel your ticket or ask for a refund. As I understand it, when you do that you lose your right to have a rebooking w/o extra cost. You bought the ticket in good faith so American should find you a new flight w/o charging more.