Legit or scam?

If you know a thing or two about crypto wallet and bitcoin,please read!! Help will be very much appreciated or even paid!

Does anyone know if the quoteklerk site is legit? I dont see anyone talking about it.

It froze my account after i received $16K BTC from another user (which i talked to before) and it’s now asking for me to deposit $300 in BTC in another address i don’t own,saying if i do my account will be back,and i will be able to withdraw the money again,for “proof in case of money laundering” or smth.Support also said if i don’t do this within 6 hours,my account will be blocked,i don’t wanna lose access to the money though.

Is this a big scam or am i just paranoid? What do i do?