Rio Technology — application for strict action against rio technology

My story is the same, i got a message in whatsapp from one of their employee offering me a data entry job, i paid 300 rps and and did the job of typing 120 pages as per their requirements, i completed this job with extreme hardwork, thought i'd get paid 15000rps out of 25000rps cause they charge their 10000rps as their maintenance fee or whatever for the first assignment... But in the end, instead they rejected my work and terminated my id for 63 spelling mistakes. So they're telling me, i have to pay the fine of nine thousand and seven hundred rps for 63 spelling mistakes!! This is so absurd. I need some assistance or help to get through this. I dont think this company is legitimate they're doing this with so many others also who worked so hard with minimal errors.. Need help with this matter please