Keystone Technology — Not giving proper information to client

Sir, firstly they message on what's app and say I m eligible for this captcha work..and tell me to send all details and, adhar card after..got my registration he continuesly called me to sign agreement..when I ask about agreement..he say it's just formality i[censored] waana work thn ok otherwise u can leave...after signing my agreement..he told me pick company cal and say yes to everything and don't ask any questions..I do same...bt when I start work site doesn't work properly..then I complain about this to him but he didn't reply..I continueslly message him..about this bt he didn't reply after doing my work for some days I realize it's fake..I can't compete my work then I read my agreement and about money I should pay when accuracy rate is not 90% ..I was wondering about it as I am student u am able to pay such high amount like rs 6900/- I continueslly msg him and also told him to block my id buts he didn't reply...what can I do now