Infonex — blackmailing to pay 18000 or they will file case against me

Address:

#8/87,Narasingarao Street, Oldpet, Chittoor, Andhra Pradesh, 517408

Respected sir/madam
I am hayath hussin, i applied for this captcha work in quickr and i got a whatsapp message from infonex company they asked to download mac2cap 'app' about a part-time job which involved entering 10000 captchas within 10 days in which 90% has to be correct and told that there are few vacancies left in this job. So, when i accepted the job, they had sent me two links, one of which opened to an app and they called me and asked to upload my photo and signature, aadhar card. Within a few minutes, i got a mail from them saying that you signed an agreement (Which i'm unaware of) that you are liable to pay 9400 if you don’t reach 90% accuracy. Without my permission, they have filed an agreement call not answering after agreement. Very irresponsible person not answer my phone after agreement they shall not help me for working didnt count my captchas after 150 entries it will be zero count. I asked them for clarification but they didn't. I said them that on the next day of agreement cancel my id iam not able to do the work because im facing some personal situations they said for that you have signed an agreement that you are liable to pay 10200 including penality.
After completion of my deadline advocate called me and saying to pay the amount 18000 and telling me about case filling against of me. If i have failed to pay that amount in 45min in five days i have to pay 2lakhs inclusive all taxes and penality and charges. Sir im facing mental situation please help me out.
Kindly take frequently action on my request