If you got your account hacked. Most likey u downloaded a keylogger. And most of you will quickly change your password once u relise u got hacked, but with still the keylogger on your PC. This is where you give the hacker 1 of your secret questions answer. Now he can change your email. And u have the lost the account.
This just happened to a clannie of mine. So check for keylogger first, then change your password.