GUYS I THINK I HAVE A SOLUTION TO THOSE WHO HAVE TROUBLE WITH GETTING THEIR SPECIALIZATIONS....

So my specializations weren't working. What happened was I activated it and went to play Halo 4 and it didn't work. So naturally I went back to the email to make sure I activated it and it told me code already in use. So I was like fuck it im going Operator. Basically I went to play BF3 after hitting exp cap and had to download an update I WENT TO ACTIVE DOWNLOADS on my xbox and boom there it was... it said downloading to another console. So I clicked on it and got it back!

Really sorry if this doesn't help you, but it worked for me.

Happy killing Spartans.