Unable to withdraw

It said that the withdrawal requires 3 working day at the beginning. In November, the reasons for delay are: can only make one withdrawal at once/do not fill the account and ask people to re-apply. At the end of December, it said that it requires 20% margins deposit before withdrawal for anti-laundering money. On January of this year, it changes to say that it requires to pay income tax for 20%. They just keep delay the withdrawals and ask people to deposit. It is totally a scam.