i redeemed a card for 2800 microsoft points yesterday, and today my balance is zero?
Is your balance showing "0" or is it asking you to "Check your Points Balance" on the site?
Several users have reported that their points are not showing up (including mine) but instead saying to check your balance. It appears that there may be system problems on the website today.
You can find more information about this issue here: support.xbox.com/.../xbox-live-status