Ucoin digital trading platform - UCoin froze my lakhs of money and asked me to pay more to withdraw

I was contacted by a lady over the whatsapp and asked me to post reviews and earn money. I gave it a try and got *** initial amount. After few reviews, they told me about a group task where I was asked to pay ****, after the payment they introduced me with another task of investment ***** to withdraw previous and current payment with commission. After the second payment, they introduced *rd task again to pay ***** and it went on till I paid a total of ******. At this point, they promised that I could withdraw all amount after a security deposit of around ******. They always claimed that the next payment will be the final one to withdraw your money but it never happened. A high level fraud is running in the market without any fear of law & order.