Account has been hacked??

I woke up this morning to go on TikTok, I found out that I was logged out, I tried to login using my Gmail, it seems the hacker changed my entire password, somehow cracked through my two step verification as well. This user put his own number for two step verification now. Even removed my email tied to the account.

Only way I can keep spamming his phone is trying to login with google email. I contacted Support but how long would this take?

I have like 5k worth of saved videos and my FYP.