Freelancer — Not Paying the payment and collecting GST money

I received a job from the Source Automation through freelancer Website. After completing work they asked me to Contact the freelancer team leader @iRazoo_samual for work verification through telegram contact. When i contacted @iRazoo_samual he verified and said the work correct and he would pay me, but to Receive the payment i hav to pay the GST amount of 900rs. When i denied he said "you're new to freelancing so you don't know, everyone is paying GST before payment". i paid 900rs rupees to him and he took my account details and lied to me that he has sent me the money through bank and to wait for 72 hours. It has been more 4 days i didn't receive the payment and he is not even responding to my messages. He is also lying that he is freelancer team leader. The upi QR code he sent for me to pay 900rs belongs to person called Abhishek Kumar Pawar.