Company Fraud case

Its regarding a company "SureJobs" who is offering airlines job to me, they asked for money for the registration and at each process level they asked me to pay some amount of money, so that they can process my request further to airlines department, i paid them some amount but after some time they asked more and more, so i denied them to pay further. So they told me either you need to pay the money or we will close your registration and refund the money back, so i told to close. Then they try to ask my debit card number cvv atm pin even saying that one otp will came to you and you need to tell us the otp then your money will b e back in you account, saying that their company only transfer via debit/credit card, So i denied them that none of the company won't ask for this payment mode. So after this trick won't work for them, so they ask me to pay the GST amount for the total amount they will refund, then only they will pay me back my amount. Now i am denying these (because it's the GST policy that you won't need to pay the GST if the order is canceled). So now they are denying to pay the money. Please help me out in this case. I have following information regarding them : 1. Numbers 2. recordings