got scammed.... what to do???

a guy called (edited) was saying that he is selling his NF account for 15k. though we need a second account we want to have it... and he gave us user name and password then we gave the money... when we log out and tried it, it didn't worked... we got scammed... and then he ignored us and we found that he did this for another people too... and he was continuing making this thing to..

so how to do now??? can i get my 15k back???

thnx

http://support.guildwars.com/ - report the person there. You're not going to get your money back as it's against the EULA to buy accounts like that. Closed.