Mahagram Payments Private Limited - fraud company security deposit not refunding

i take nsdl pan card service from mahagram.in by paying **, *** security deposit (as they mailed this is fully refund).

but initially they said it taking *-* working days, to activate nsdl paam id.
but after regular followup with the client they didn't give me paam id.

where ever i trying to contact them, they politely saying it will activate today only. but it was more than ** days, account still not activate. they only given me egram id "ag******". where i nothing to do. ( they said you are not authorise to access the service because you applied for nsdl agent)

but nsdl agent also not activating.

again i contact them recently, they said your documents was not complete, but initially (before make payment) i asked and told that please make sure all documents are complete, after complete all document i will make payment, that time they said it was complete only payment is pending.

and now i said for refund me my money, i do not want to take your service, they said it can't be refund, as per the company policies. but i seen no where is mentioned in mail that fully refundable security deposit is not refundable.

later i hear that the company is fraud company, all staff also doing fraud business in india.

i confirmed from nsdl, nsdl not given any licence or authority to mahagram payments private limited.