#2 - June 9, 2010, 12:55 a.m.
Are you certain that you entered the information correctly, Astian?
Game Cards should not expire so it should still be good. Try the card again and if you still have an issue please contact our Billing department. I'm not certain what can be done but they can usually check the card and see when and where it was used.
You can call 1 (800) 592 5499 (1-800-59-BLIZZARD) 7AM-8PM (PST/PDT) for live representation.
Australian users should please call 1-800-041-378 if the standard 800 line does not work.