I totally understand why you are upset -- that's a horrible situation to be in!
It looks like their domain name has expired and was bought out by a squatter. That means they can't get their domain name back until/unless they pay the squatter money. It can happen if you aren't careful and forget to renew before it expires -- squatters always check popular (often accessed) domains and buy them if they expire and then charge exorbitant sums to give them back to their rightful owners.
A quick search on DoA turned up some other people worrying about the same issue. According to one poster, this is their Ebay store:
So they may be contactable via Ebay. And this is a possible alternate email address, although the poster noted that it may be used for PayPal only: email@example.com
If you are a DoA member, I found this info in the last page of the DollnDoll discussion thread
, so you may consider following that thread for more info.
I really hope that this is just a big mistake and that everything works out okay for you! Please keep us updated.