American Airlines downgraded me to economy class. Can I get a refund?

HeraldNet.com
HeraldNet.com - Everett and Snohomish County news from The Daily Herald in Everett, Washington

The airline promised Margarethe Hoenig a partial refund on her flight from Dallas to Auckland, New Zealand. Then it reneged.

American Airlines downgraded me to economy class. Can I get a refund?
Wire Service