Did you recently renew your xbox gold memebership or recently join the program?
Xbox Live Rewards is updated at the end of each month so I'd wait till then and see if it has updated. If you're still having problems with it after that it's best to post here:
Did this solve your problem?
Sorry this didn't help.
Great! Thanks for marking this as the answer.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.