Stolen characters from my account

Hi, i've been playing from time to time, and everytime i logged in (once in 2 months or so) my characters are dissapearing. I though it's common like the realm is reseting or something. But I last time i logged in i felt it was a bit suspicious. So i checked the history of trades of characters on my account and i saw all my characters were sold by some person that somehow got into my account. I also checked gifting history and someone sent coins from my account to account named "Spitonmybody" which is not mine account. Is there some possible way to get my characters back? Thanks in order.

first of all, for using Trade system it requries 2-step authentication... So how could someone do that?

that said, since your account is premium, you may contact support system by opening a ticket on website:
https://www.warmane.com/account -> support -> create ticket -> general enquiry