Hi, I made a wrong purchase of the game in EU which should have been NA. I realized this after attempting to input the activation code. Is there a way to switch the code to another region or could I get a refund?

P.S: I have already submitted a support ticket but there wasn't any reply so I came here.
P.S: I also realised that this is probably not the best place to put this to get help but I can't post over at the other forums.

Appreciate all relevant responses thanks.