$15 credit for 1 year of xbox live - only recieved $5 credit

I recently purchased years worth of time fro xbox live and according to the promotion I was supposed to get a $15 credit. I have received $5 as of yesterday. Did I read the promotion wrong

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Xbox live promo 15 dollar credit

I got the one year promo that gets you 15 dollars in credit on Xbox live and called a week later to find out why I didn't get the credit yet. They said to contact someone from Xbox live rewards yet there's no contact info there and yestersay I got a message
saying I got a 5 dollar promo for joining Xbox live even though I bought a year of gold. Still haven't gotten the 15 on my account.

 

Pay what you owe XBOX

Back in April I purchased two 30 dollar Microsoft Cards for my xbox live onto one receipt and was not given a credit of 5 dollars per every 15 dollar value onto my xbox account as promised by the special promotional going on XBOX.com. I was only rewarded
with a five dollar credit. I am missing 15 more to that credit amount. Will someone please assist.

 

Hey, guys! We've got this sent up to the appropriate people. Once I have more information, I'll be sure to post back in here. Thanks for your patience while we look into this!

 

I am also having this problem. Thanks for getting it submitted to the right people.

 

Hey eveyone!

We've determined that you qualify for this promotion. You should be receiving an Xbox Live console message with further details shortly. Thanks again!