[Resolved]  Unix Enterprise — unethical behaviour fraud and asking money

In the month of september 2019 i registered for form filling job in unix enterprise company in online one lady made me a agreement and after few days she switch off the mobile and later one fine morning she sent a message and by evening she sent a work user id and login through mail her mail id is [protected]@gmail.com her mobile no is [protected]
She gave me id & password and she said login that id i'm login that id and later she gave me another id & password & she said this is your user id and password and start the work so im doing my work after 10days im completed my work and submit. After 3 days legal department mail me to pay money for argeement and im replay that im already submit my work later day by day different mobile numbers different persons call me and blackmail me to pay huge amount after a year yesterday they sent me a letter to my home address a sole arbitrator today some one call me a advocate rahul desai mobie no is [protected] tensed me to pay 7000 for cancellation of aggrement he rudly talk and threatening me to file a case & legal action please help me to solve this solution plz im so tensed im attached all what they sent