Ken Technology — captcha work

Address:

Krishna, Andhra Pradesh, 500004

They call me on 11th feb 2020 for work from home and said that you will get 30, 000rs for 10, 000 captcha that means 3rs for one captcha but you have to give 6900 rs registration amount this amount will be deducted from your salary that means you will get 23, 100rs. You get your salary when you give 90% accuracy in captcha filling i said ok but they don't tell me about agreement. After few minutes they send an agreement to sign it.
Before starting work I have seen about the company in Google so I said to cancel everything but they didn't cancel nd started torturing me plz help me