[Resolved]  Ds Services — fake company

I worked with digital services, maharashtra through online and they gave me task of completing 1000 forms in 10 days. Due to network issues, i couldnt complete that 1000 forms but what ever i completed was accurate. When i asked them office address, they are threatening with legal notice and they are demanding me more money which is not there in agreement. Incase of not paying, they are threatening to case a file. Please help me with this issue.