Warhammer Online billing system charged some players its $14.99 monthly fee dozens of times on their monthly due dates. The amount of the overcharge differs from user to user -- reports on this forum thread average between $200 and $500. One player, who claimed to be repeatedly charged for a $77.94 six-month subscription, was hit with fees totaling $1013.12.
The cause of the error is currently unclear, as is the scope of its impact on the game's subscriber base. EA's billing support department is now in full-on crisis recovery mode, working with each affected player's financial institution to refund the fees within "24-36 hours." Considering that this debacle could have likely led to any number of overdraft fees and bounced rent checks for the over-charged, it could prove quite a costly recovery for EA.