Techbite Digital Services — The fake company threatening me for money.

Few days back I have applied for the data entry job of
form filling company named TECHBITE DIGITAL SERVICES called me and told me about the job details.
Data entry of 1000 forms in 12 days with minimum 85% accuracy. That means 850 forms should be correct.
Salary offered by them was ₹18 per form that is rs. 18000/- out of which they will deduct rs. 3500/- as the admin/utility charge from the first slot of my job. I was ask to send my phone number, email id and Aadhar card. After that they sent me an agreement letter that if the work is not accurate or not submitted on time i have to pay the penalty fees of rs. 3500/- and they took my photo as my signature to the agreement.
The company belongs to DELHI And have no particular site on google
The data they gave me doesnt look like a proper data.
I did all 1200 forms on time with 99% accuracy. And now they are calling me and saying that my 544 forms are incorrect. I have compared the correct data to the incorrect one's its clearly showing that they had changed my working by themselves.
They are harassing me and abusing me.
I have paid admin charges still asking more money for cancellation.. etc .

They are threatening for court case if i dont pay the additional charges.

CONTACT number of form filling company
([protected]/([protected])
([protected]/[protected])

TECHBITE DIGITAL SERVICES
[protected], +[protected]
project.[protected]@gmail.com