Credit Card Discussion

I found this website Internationalmobilestore on eBay, yahoo and justboughtit.com Is it trustable? www.internationalmobilestore.com
I want to buy a mobile phone from this site. The address is valid and they offer credit card ssl payment with Yahoo. Please check it out and let me know.

I once had a card, but it is now closed. I wish to continue using Yahoo’s services, but cannot pay by credit or debit card. How can this be done? I’ve been working on this since June, and have gotten NO response from Yahoo. Help, please.

This happened while adding funds to my PhoneOut subcription in Yahoo Voice, by making use of a perfectly valid credit card that was always being accepted earlier by Yahoo. I could not get proper answer to this problem under Yahoo help services.