Gainers Infotech interview questions

I got an interview call from HR. I enquired about the company and visited there website. They have LinkedIn page also all seems to be good but when I reached there I was shocked. A small room with 3-4 employees with no company environment sign. Overall I attended the interview and at the last it was clear that it's a consultancy not a company which is demanding for 20K after I got the Job. Total SCAM.