My RAF game time only can hold arround 1 week,got email like this from blizzard:
World of Warcraft -- RAF Free Month(s) Removed
Hello,
We are writing to inform you that, regrettably, due to a payment issue related to one of the accounts you “referred” via the Recruit-a-Friend system, the free month(s) subscription issued to your account has been disabled. Please note that this is not a penalty for your account, but it may require you to update your subscription details if you wish to continue to play.
Please note that we can only discuss this issue with the “referred” account with the account owner of that account, and unfortunately, we will be unable to answer any of your questions relating to that account. If your referee has any question or concerns, (s)he can contact us using the Blizzard customer service website: https://us.battle.net/support/ticket/submit