Wieon Enterprise — threatening to file legal action

Sir please help i applied for this company wieon enterprise and did their work like they mentioned within 15 days. I submitted my work on time but they terminated my id and emailing me that the work was not 90% accurate and that you have to pay 10000. Sir i am just a student and i did this job just to provide for my expenses. I tried to contact them but they are not even replying back. An i'm scared that they might take legal actions against me. What should i do? Should i just block them from everywhere and respond back. Please help thank you