First, if your account is currently registered to an email address that you have access to, use the automatic recovery system:
http://www.sythe.org/login.php?do=lostpw. Note that if you registered with a hotmail/live email, you will not be able to recover automatically, as they have blocked emails from sythe.org.
If you were hacked and your email was changed:
1. Ensure that a moderator has banned your account until you regain control of it.
2. Check the Report a Scammer forum for reports against you/your hacker, and settle any outstanding debts. We will not consider returning an account until they are cleared.
3. Post a dispute to reclaim your account. You will need evidence that you were its original owner.
Your dispute should be answered by an administrator within a week or so. If not, seek out someone to get your request pushed through.