Unable to withdrawal

Hi, I was trading on the this platform from the past 3 months or so. Last week, it went on maintenance and re-opened for trading. I traded as usual and got profit. They were saying it is abnormal profit and they made me to pay off that amount to thaw the account. Yesterday it happened again. Now they are asking for risk margin amount also to deposit to thaw the account and process the withdrawal. Here is their response:Hello, the system has detected abnormal transactions in your account on December 22. Because your account has experienced abnormal transactions for many times, it is suspected of malicious arbitrage, illegal profit, triggering a secondary risk warning, and your account has now been frozen. . Since our company does not have the right to privately deduct illegal profit funds from your account, you need to pay another two illegal exchange profit funds on December 22. Your profit amount on December 22nd is 10,730 U.S. dollars. You need to pay 3 times the capital of 10730 US dollars (31290 US dollars) as a margin (of which 10730 US dollars is the abnormal profit repayment, 21460 US dollars is the double risk margin for multiple violations) The margin will reach your account, and you will complete the payment of the profit The account can be unfrozen and returned to normal after the deposit and the deposit, and withdrawals can be processed normally after the account has been unfrozen and returned to normal.