They hacked my account

Sunday night I received an email that another cel had accessed my account. The next minute the hacker changed the user's email to another and in the fucking email with the new "hidden" email (like this: se********@v****.***)

On monday eraly I saw this emails and cliked the button saying it wasn't me. But they asked me to recovered my password and, when I put my email, it directed me to another account because my original account had its email changed.

I send a complaint to support but nothing happens. Today the hacker alredy changed the profile photo. What can I do?! My original account is "@BixoSilva"