Unix Enterprise — form filling fraud

Address: Aurangabad, Maharashtra

I started my work as told by the company unix enterprise.. It was told to compete within 10 days.. They also provided helpline numbers which they didn't even respond atleast once.. After completing the work, i submitted within the given time limit. I've done the work with maximum accuracy and now they are saying the accuracy is below 90%.. They are asking to pay 4500 + extra 3000.. It was said that i had to pay 4500 if i don't submit the work.. Now they are asking for more money.. If i don't pay the amount they said they will file a notice against me.. I'm in great trouble..