Auto-Renew Subscription Issue

I currently own 3 WoW accounts and all 3 accounts see the same issue so I doesn't appear to be account specific and it had been occurring before the swap to Battle.net so it doesn't appear to be related to my merging all 3 into an umbrella B.net account.

I have all 3 of my accounts set to automatically renew in 3 month cycles. When it hits the date for billing, I end up getting my account frozen pending payment. However, the payment never happens. My credit card isn't getting declined nor is it ever at my credit limit.

I can bypass the problem by entering the account and re-entering in the exact same credit card info and when I do that, the payment authorization goes through without a problem.

Since it doesn't seem to be an issue related to being unable to bill me (not declined or blocked), I figured I would try CSF before contacting billing since I am unsure if it is a billing related problem seeing as you can bill me if I just enter my information again (albeit unchanged).

Edit: This isn't related to what seems to be the current crop of billing issues since none of my accounts are currently pending payment.