Usys Company — they are threatening me to pay more money

When i get to know about usys company giving job i got register and they even didn't say when my job will start after 5 days i got to know that job is started and anyhow i started my work and completed around 250 entry due to my personal problem i quit the job and said to them they said it's ok and after some days they call and message me to pay 8510 and if i fail they said you have to pay 40, 000. I call to another number they said u have to pay 8500 but the another person saying 8510 i got fear and i pay 8510 and next day they again call me and ask me to pay 5000 again and threatening me as u i'll come to court or else we i'll say to police. I dono what to do sir please help me i even don't have money. I'm in so much fear, please do help me