Airtelcaf.com — online data entry job from quikr fraud

Address:

Maroshi Village Road, Bori Colony, Marol, Mumbai, Maharashtra 400069

Hello i applied for online data entry job from quikr on 27 august, 2020 and i got a call from the no. [protected] saying his name is rahul negi and they offered the job but asked for 2000 rs as security. I did the payment at airtel payments bank and after that they asked for 3710 rs for agreement. After paying that they asked for more 4500 rs... Which then i realised maybe fraud. I asked them for refund bt they are saying to pay 4500 before. The account given by them is - a/c no[protected]
Ifsc code - pytm0123456
Holder name - airtel
I don't know what to do now