Dv Enterprises — threatening calls from the company

The company had given me a work of 1200 forms, which were to be filled within 8 days. I couldn't complete that workload. Now the company is demanding money from me. They are threatening me about filing a court case against me. They are continuously calling & messaging me demanding money. When i searched this company in the google, i found that this company is one of the fraud companies in india. They are not employers, they are looters only. Please help me to get out of this problem.