"Your Code Has Already Been Used"

[Naraku_Diabolos]

I preordered the game again since the first time i didnt get any email or anything. Got an email straight away and was able to get my code with no issues.
Now the site lets me load my account finally and i have two preorders. one let me get my code the other just doesnt even have a code or anything ;;
i am trying to reach support but nobody answers. I hope i dont get billed twice...

This happened to me just now. I'm calling the Store's support so I can cancel the one preorder.

EDIT:

Just got off the phone with a Square-Enix Store rep, he canceled my second order. Btw, he actually sounded like he was worn out. Poor guy. He said today was a nightmare for the store with so many people calling in with either the same problem or not being able to preorder the expansion. Dev reps, please tell your store reps that they are trying their hardest to get things resolved, and I thank the one guy for helping me. So, just give him a pat on the back and a nice, cold beer for him lol.