Amazon India — phone call fraud

I got a call from fake amazon on 04/09/2018 saying i have been selected for a gift. For that i need to choose product of 5000 from amazon.in and tell them on call what i have chosen and they will book it for me. I chose a product and paid them 5000 via google pay. Next day (05/09/2018) they called and told you need to apy 11, 999 gst which will be refunded within 2 minutes on the call itself. I told them to cancel my order and refund my 5000. They told you need to pay 5000 again by google pay and when you will apy we will get a surveilence message on our screen. We will click on refund from our side and thus your money wont be deducted and the previous 5000 will be sent back to your account. I again did 5000 on google pay but it got deducted. They said you wrote wrong description in google pay description box so it went wrong. They asked me to do again for 10000. I did again, and again it got deducted. This time they said your spelling is rong in description thats why it went wrong. Again i did for 20000. Now they said our bank has some issue.in this way i did till 80000. Then they took my ifsc and bank account no. And told we will neft in your account. Today (06/09/2018) they called and told its not possible to refund 80000, you need to pay 20000 more so that we will refund 1 lakh. The person on the call gave me his pan card and aadhar card copy on whatsapp.