Credit card & mu-mo

[title156]

Hi, I want to order something from mu-mo and ship it to my friend who's studying in Japan for a year. But it keeps reject my credit card without any reasons.

ORDR0051：購入処理中にエラーが発生しました。カートリンクをクリックし、再度カート画面を表示し てください。

ORDR0037：クレジットカードのオーソリに失敗しました。

カートに商品が入っています。内容を確認してください。

Google Translation:
ORDR0051: An error occurred during the purchase process. Click on the cart link, please view the cart screen again.

ORDR0037: I failed to authorize of credit card.

Products are in the cart. Please check the contents.

Have anyone who used Tenso ever expirienced this? Is there anything I can do.

Ps. This is crazy when Japanese sites keep rejecting my card. First, Yahoo Easy Payment (which must enter the cardholder's name in katakana) and now mu-mo.