[bilingual]

This is your own fault, taken from the website of AA:


Q: I have a nonrefundable American Airlines ticket that I am not going to use. Can I use it toward the purchase of a new ticket?
A: Subject to certain restrictions and charges defined in the rules of the fare, the value of a wholly unused nonrefundable ticket may be used toward the purchase of a new ticket. Travel on such reissued tickets (or subsequently reissued tickets) must commence no later than one year from the date of issue of the original ticket.

For partially used tickets the residual value may be used toward the purchase of a new ticket. The residual value will be the difference between the fare paid and the fare for the transportation actually used as determined by the applicable rules less any charges or penalties defined in the rules of the fare that was purchased. All travel on such reissued tickets (or subsequently reissued tickets) must be completed no more than one year from the first date of travel on the original ticket or sooner if required by the tickets' fare rules.

However, the itinerary for any unused or partially used nonrefundable ticket must be canceled before the ticketed departure time of the first unused coupon, or the ticket will lose any remaining value and cannot be used for travel or reissue.