Pexiv — pixiv fraud company

I took a job online from pexiv company to fill 900 forms in 9 days. I completed my work as per instructed within the period and submitted it. But now they are giving me a fake qc report that my work is not accurate and not giving me my payment. Moreover they asked an amount of 4700. And i paid 4700, after that agin they calling and asking 5500/- for late payment.. And executive person not attending my phone calls and not providing proper answers. And advocate doing too much harassment.