[Resolved]  Sphere Services — demand for paying money

Few days ago i was interest to do data entry work so I was finding for work.. This company called me and offer for online data entry work, I said them for sending me details about the company, but they didn't sent details about company, they only sent work details.. After that this company sent the document for data entry work. But the document was totally not clear. So i was clearly talk to them that i am not interest for this work and I don't have time for this work..but they said me to do this work only for one time after that it's my choice.. Then I have completed my work and send it. Then they mailed me that my work accuracy is not 90%.. so i have to pay money...They are harrassing me mentally and they are saying that they will take me to court. I feel alot pressurized.. I also say them that if I don't sign any agreement then how can be the agreement valid??.They don't reply me for this.. but send me message for paying the amount... This is a fraud company... Even they don't have any particular address..