stole my account and changed the email

Hello people, I wonder if even with the email data the first time I created the account would have to resubmit to the helpdesk email and password changed after the theft, because I have all the necessary data to prove that the account was I really from the beginning.

I Have: First registered email account
Date of account creation
Login
Secret Question and Secret Answer
Character Name

even showing it all and if I need to send a printscreen of the email with all account data, I will send as much money already spent on this account and do not want to lose her

please help me