Kamara Technology — Demanded money

I am jobless and 1 week ago i received a call regarding data entry job from a company named as kamara techno. They asked me for adhaar card, passport size photo, and email id. N took my sign on a agreement. But aftesome time i searched on google about this company and i saw so many complaints against this company. I thought, i shouldn't join this company and i blocked his mobile now who called me and took my documents. But today i received a call, mail and messages and they are demanding me money 20k.