Login to the account panel:
http://x10hosting.com/panel.php
There you should see your suspension reason. If it's not for nulled software or anything major, you should be able to unsuspend yourself.
If it's for inactivity, please remember to login to the forums once every 14 days (two weeks). Posting is never required. It's recommended that you check the news section of the forum when you login.
Have a wonderful day!