Has anyone else received the error, in a big red box, "We are unable to process your transaction at this time." when trying to purchase a celestial steed from the Blizzard store?

I'm using the same credit card as I do for the game subscription, and have used the card in the Blizzard store in the past just fine, so I'm curious as to whether or not it's a common issue with an overloaded store?

I'd call their support number but the line is so busy they just hang up on you.

Anyone else getting this error? I got thru the queue to buy a mount for my gf as a present without a problem.