Just to warn that there are a variety of people experiencing issues with the Blizzard payment system. Subscriptions are not being taken and the payment system won't accept changes to them unless they're pre-paid cards as far as I understand.

Caught up in it myself, managed to get ahold of customer support and get a free day out of them. Hopefully fixed soon!

Yesterday one of my accounts, which was on recurring monthly payment with creditcard suddenly had lost it. I had to re-enter the subscription to activate the account again. My main account on same creditcard also on monthly payment was still working fine though. So yep they have had some problems :)

Had problems two months ago, they even changed my password. Took them a month to send me the mail about it.