Locked Out of Account After Hack?

Over the last two days, I found that posts were appearing on my account that I did not make. I immediately enable two-factor authentication, switched my password, and contacted support. However, after that, I woke up today to find that my account was locked, and I have no way to even see the support request that I created.

In short, I'm locked out of my account after a hack, and don't know how to proceed. What should I do?