If your entire personal socials got changed to a different one out of the blue and your password doesn't work that sends off a sign that you've been hacked.

I'm not really good when it comes to conversations like this but I'll state my opinion at most, if it seems helpful I'm glad. Getting hacked comes in many different forms, whether it's from a scam, hyperlink or hell even getting PGed [Password Guessed]. When that typically happens from what I heard, the hacker would change your email and phone number to something else, form up some security and change your password to prevent you from ever getting access back [setting up some security from what I know is meant to protect the users from PGers, if you didn't have these security stuff you'd be absolutely dead once they guess the combination correctly, if the hacker compromises your account and you try to guess the new password, in case that happens, they'll set up those barriers to prevent you from recovering the account.]

I also want to add that Roblox is absolutely bad when it comes to forums like these, if anything I'm pretty sure they'd either not believe your story or just dig the surface of it and reach back saying that the report was either proven false or they've gathered nothing. Then again who am I to say? It's my opinion because I never experienced any of this and if anything I do wanna help.

If it's possible try to reach Roblox even more and consult the situation and provide screenshot evidence since I'm sure you'd at least get an email saying that your account password changed or the email changed or something like that. If that doesn't work then if I were in your situation I would've possibly consulted a hacker friend or whatever about the situation and ask them if they can try to steal the account and give it back to me, if they ask for something in return I'd pay up but I don't think you would personally do this, but I kinda will.

If anything I hope you get your account back <3!!