Prox Company — using incorrect qc tool and purposely failed me and asking me to pay 4700

Hi sir/mam,

I had enrolled with prox company thinking that it is genuine because they had agreement etc. When i submitted my work they said i failed in qc report and when i checked the report it shows false/incorrect validation. I do have proofs. Please help me. From today morning, i have been getting threatening calls from the company to pay 4700 rs otherwise they would take it up legally. For more details please contact me on [protected]