Upgrading Trial Account

I've recently upgraded my trial account to the standard WoW edition. I checked my bank to see if the transaction was complete and it was but it charged me twice. It does say my account is no longer a trial account though. Now, I've read around and I know that one is a pending charge and will (hopefully) go back onto my bank account within a couple of days.

After this I bought a month membership and that went through smoothly. After the month membership I wanted to upgrade to Burning Crusade (Yes, I wanted to upgrade my account fully; Wrath and all). I went to the page to upgrade, filled out the information and cicked submit. It said that the credit card info (or something along those lines) was invalid or it said the transaction was unsuccessful. I again, checked my bank account and the weird thing was that it actually charged me for it and it also charged the pending fee.. Now, I wouldn't be worried if it was a successful payment, but it said it wasn't and it charged me. It also says that I'm still only on the standard WoW.

Can someone please help or give me some info on what is going on and if it did actually work, or was it just delayed or something? I've called Blizzard but they're que for hold is full and I've also sent them an e-mail, just waiting a reply. Just posting this to get some answers from other players.
Thanks.