My account has been hacked or stolen

i didnt play TO for many days then i logged in, it wasnt opening, its NICK is ConFuZeD and then i tryed to change password but it wasnt Connected to my Email as u know that i am the owner of its old Email :[removed] but i cant get my account back, i even sent Email to Help@tankionline.com but they said that i entered the wrong info, i have SS and many things of that account, please give me my account back