Airtel — bharti 4g airtel tower installation in my land

Address:

Nagaon, Assam, 782460

Call came from akriti sharma kolkata telling she is from bharti 4g airtel tower company asking aplot in my land and i agreed first they asked me 15000 for insurance second 50000 for noc and third 30000 for pollution. They send me mail offer letter, noc copy and agreement letter. Total i have paid 95000 through destimoney securities pvt. Ltd and now again asking 50000 by abhijit chakraborty from rtg airtel company for gst number to transfer in my account rs.10, 00, 000 for which i told him that i am not able to pay so i asked him to refund my 95000 he told me that it will not refund. So sir please tell me the solution to get my money refund.