Regarding job offers from Offtech

I have applied the job on quiker and then i got a call from OFFTECH .which asked me to send my Adhar card to them for proof that I am not under 18th and then they send me a agreement on the stamp paper. and then they give me a work and they asked that if i am not complete the job within time then I supposed to pay 9300 amount. then I send a mail this company helpline number. after some days I got a sms that they have filled a case against me. Now I can’t understand what I want to do. I request you please help me

Jayanti Chakraborty
Kolkata 700061, West Bengal
Email: jxxxxxxxxxxxx6@gmail.com