Unknown Caller — I'm complaining about a unknown call from different country.

He called me and started talking about loterry. He said i have won lottery from airtel company and they have my details and when i questioned them they said it's ok if i don't wanna take the lottery, they have many other customers to talk to. I said them i gave the number to police and they were saying they will send there address and asked me to bring police or cbi. From truecaller it shows that the no. Is from pakistan