Csr — Csr captcha company

I got a call from Ajay phone no. [[protected]] on 10 oct 2020 and she told me that offering me a part time home base job of captcha typing saying that if i complete 90% of correct captcha within 10 days will earn 17500/-. And i'm agree to join then. Then she asked my pan card me for the selection and i provided this to her through whatsapp. Within one hour she send one online agreement mail then i not signed it. After that she was called again for confirm the job. However i research in the google about this csr captcha then i found that this company is fraud and snatching money from people. I immediately told her to cancel the registration but she can said cancel it. But not given work for me. But 30 nov 2020 i got a mail from advocate ajay kulkurni and calling me to pay 75000/ - otherwise they will file a case against me. Now i am very much afraid. Please do the needful help i and take strong steps owards such a fake company.