For this, you will need to contact EA Support at http://help.ea.com/en/ and speak with a game advisor (Live chat or at a number that they can call you back on, certain countries only). They should be able to look up and see wherther or not the code was used, or can reissue you one if the code is bad.
If this message helped you or direct you to the right direction, just click the XP box at the bottom right of the message.
XP = Thanks for helping, trying to help, or what a funny guy.
Accept as solution = This solved my problem!
