Complaint regarding fraud data entry job offer

Regarding Data entry job fraud.

Few days ago i got a message in whatsapp saying they will give me a data entry job which is free of cost i have to fill 600 forms in 6days then i will get 18000/-rs in return per form 30 rs and they asked me to sent my adhaar card, and sign an agreement and they gave me a link and username and password to start working then i started working then on the 4th day they mentioned that the website is blocked as i logged in more times and to continue the work i have to pay 4000rs then i blocked them and they sent me emails from their lawyers by threatening if i wont the money they will file the case against me and i have to pay the penalty rs 100000.  It is fraud company please take a legal action it.