Airtel — indian health organisation

Address:

Kamrup Metropolitan, Assam, 781024

Dear sir/madam,

I got a call from bharti airtel as they wants to build a airtel-4g mobile tower in my plot,
And the important thing is they need a health card from indian health organization from destimoney.
Was it mandatory??
Can u plz give some info about it, either its real or they r doing some fraud in name of airtel 4g tower.

Thank you