Star Solutions — threatening and harassment

Sir,
I found the job opportunity in quikr and i applied for it. Within 1or 2 days a call came from the company named star solution, they asked me are you interseted in the data entry work. I was ready to do the work and then i submittedmy id proof and kept an agreement with the company to do the job with certain conditions. The next day i recevied a username and password from them. I have completed the work within the time period with full effort and satisfaction. Each and every form was re-corrected during the work time from 1 to 1000 forms. After 24hrs i received the qc report which thereby said that i have failed in the work. Sharp after one hour i received a call saying that to pay an amount to 7600 as penalty and later by redeucing the amount to 5600. They keep on changing the amount of penalty each time they call. When i contacted the helpline the number was swift off and i mailed them it was said that the mail id is not found. He was speaking so rude and cruel and he harassed and threatened me to pay the amount otherwise they may move legally. After 3 days a call came mentioning that he is an advocate from the company asking whether i am paying the penalty otherwise they will move for the case. I conveyed to him that the agent was behaving so badly and threatened me and than the advocate said that there is no realationship between the agent who spoke to me and the advocate. As an advocate he must hear my side too but he was never ready to hear whatever i wanted to convey. Different people called me for the same problem from different number. I also checked out some of the comments about the company where some people mentioning they have got cheated.
I hereby request you to help me out to get a solution for the same problem which i have mentioned above as early as possible.