Why does adidas.com suck so bad?

First of all the site runs slower then molasses in January.. 2nd of all I can't even order anything. Every time I enter my credit card info in it won't take it. I called customer service and they put th order in for me and said everything was fine. Then today I get an e-mail saying my order was cancelled. My card works perfectly fine, I use it to order all kinds of stuff on the internet. WTF is wrong with this company and their website? Anyone else have this same problem?