I'm sorry but the forum here is not the place to request help. You'll have to contact support for your issue. You'll need to be able to prove you're the owner of the account so be sure to be ready to answer their questions.

Did you go to any links advertising a free gil giveaway or anything like that? Please be sure to read up on what "phishing" is and what you can do to protect yourself in future.

If it wasn't this you may have fallen victim to the brute force password attack that was going on awhile back.

I would also suggest that when you get your account back you activate 2FA/OTP to be on the safe side.

Hope things go well for you with support.