Big Bazaar / Futurebazaar / Future Retail / Hometown — future bazaar fake insurance

You get a call from[protected], asking there is a accidental insurance newly introduced, our management will reach your home to take signature, so please give the nominee details and DOB and home address.
I provided the details, as they said from future bazaar and told exactly in which bigbazaar I purchased (including amount) it .
Please resolve this issue. Still I'm waiting for their call.
But i tried call them back. but no use.
Please resolve this issue.