STM — they not cancel my registration

Address: BAGHMARA MATIGHARA, BAGHMARA MATIGHARA, Dhanbad, Jharkhand, 828306

Applied for some work from home data entry jobs on quickr. Same day i started getting calls for such job offers. The name of the company was stm and they offered me a job of filling 1500 forms for 20 rs each i. E. A total of rs 30000/- in 10 days. They said that if i fail to get an accuracy less that 90%, then i'll not get any salary and i'll have to pay a registration amount of rs 4500. After i completed the work and submitted it, a qc report was generated which indicated that my accuracy in the work was less than 90%.they made an agreement with me without telling me about full details of agreement .Now i want to cancel my registration they want money from me for cancellation.