Akt Enterprise — unusual demand for money and unusual blackmailing

Respected sir, I am a student and registered on Quiker job site for work at home jobs. From Qiker this AKT enterprises call me for the of work at home they told me there is no registration fees and we will provide you a app by using this app you have to complete 7000 captcha in 7 day, and if you are unable to complete this work you have to pay 5100 as penalty. And the do agreement of this work with this condition for that they send me link on which this agreement is there and told me to upload the picture of sign and self picture. After that they also take my Adhar card photo. After completing this they provide me a app link to download the app but sir the app which they provide have many problems such as whenever I complete 150 captcha it automatically shows zero work and so many problems of alphabet like I, l, and। i.e slash. Then I asked them for help but the helpline no. are wrong which are provided by them. And because of this I cant complete the work in 7days.After that they send me a mail of payment intimation. And now they are blackmailing me for money giving the reason of breach of contract, otherwise they will file a complain in court and send the police at my home. Sir please help me. Sir I have pay them 51000 to settle my case until they are calling me back to back and blackmailing again to pay. They send me the soft copy of the noc legal of akt enterprise still they are blackmailing to pay.I filing this complain as I found this company is fraud and they done the same thing with so many people. I am attaching some screenshots of their message mails and other chats. I request you to please help me this out. Please.make my money to be refunded.