Avi Enterprise — I'm complaining about avi enterprise for captcha filling work in gujarat

They want me to complete their work in 10 days .
When I get to know about them that they are fraud.
After that I stopped working on their application of CAPTCHA filling .
Now, someone called me and asking for ₹6900 penalty for non completion of work in time .
They are sending mail and text message that they had filled a case against my non-complition of work

HELP ME ...