Eureka Forbes — Money

One person texted on whatsapp and he called me and said that i have been received to work on data entry job in company named the eureka service.
The job consists of data entry where i need to complete 480 forms in 5 days.
He said that the job is totally free but when the first job is done and if i achieve the accuracy the registration amount should be deducted from my first salary.
He sent me an agreement on which it mentionned that if i fail to achieve the accuracy needed i have to pay the registration amount on my own.
He ask me to sign the agreement which i signed.
Then he sent me on email the login link, password.
I started the work with caution, i verified each data entry done, but when the qc report arrived they said the majority of my work is wrong. I am sure that every data entry that i have done was correct.
And as mentionned on the agreement, in case i fail to achieve the accuracy required, i have to pay the registration amount on my own, i paid the registration amount of rs.5000 after receiving all the details of bank that i got from an advocate that they give. The advocate was arun chaudhary.
Then they called me and ask me if i want to cancel the work or if i want to continue.
They said if i want to cancel i should pay an amount of rs.25500 by online payment, and in case i don't pay that amount, i should pay an amount of rs.[protected] per month during 6 months of the agreement.

I said i can't pay that amount and they said that they will take the affair in the court.

I really need help from your side so if anyone sees this, please reply and help me.