Weion Enterprises — fake enterprise

Sir, i was also given a task and i submitted it on time but they declared it inaccurate and told me to submit 10000 rs or they will send me a legal notice. I paid the money but now they demanding more for this. What should i do? As they are taking just money and accuracy determining method is not appropriate and i want all my money back as they are misleading the consumers. An action should be taken against the company and the respective lawyers who threaten people by misusing the law. Please consider it as soon as possible