Buying from Blizz store a huge hassle

Why, oh, why is it such a massive effort to buy something from the Blizzard store. I have my credit details saved but that doesn't work. I put them in again and that doesn't work. I try Chrome, Firefox and Explorer and it still won't let me pass the credit card entry thingy.

I've been buying stuff from you guys for more than 6 years now suddenly I can't. Well, not suddenly. It's happened the last 2 times but I can't remember how I got around it. But anyway. What's the deal with trying to buy stuff? I don't have this problem at any other site I use.

Anyone else get this? Any help is appreciated. hehe

8-)