Spice Jet Airlines — Got a fake job call letter

Address:

56 golaghata, Maa Tara Apartment,2nd floor

Yesterday I received a call regarding job from Spicejet airlines and they convinced to pay Rs 3500 for registration(which was refundable). Today after they scheduled the interview they were asking me to pay Rs 16500 for document verification and I refused and said that I want to cancel it and I want my refund after that now they are not answering my calls and mails. Please help me get my refund back.