[Resolved]  Naaptol — naaptol scratch and win

I have received a postal mail, in that a got a naaptol scratch and win card and provided with a letter of instructions, when i scratch the card; i got a redemption code and won 15 lakh only ( it says exactly like that).
The letter of instruction contains the following helpline no. [protected] and[protected], they ask my bank details to be send through SMS or WhatsApp or mail on the website www.naaptol.gift
Redemption rules:
1. total amount will be directly credited to your bank account.
2. All government taxes + processing fees will be paid by the winner.
3. The charges will be collected in advance and will not be adjusted against
the prize money.
4. All payments will be made on term of state and central government rule.
5. Your Bank Acc No. must link with Aadhar card and PAN card.

Then i am asked to fill the form asking the bank account details and mobile no. and pan and aadhar card no. also to sign the form at the bottom.