Datalink Infotype — fraudsters are harassing me a lot..

I was looking for a data entry job and i have sign in to the website i registered. After some time i get a call from datalink infotype they are offering me job without no hidden charges and no registration fee. So i registered to this company and made a agreement. The work was completed 2200 from in 20 days. Then after someday i realized that this is a fraud company and i made a big mistake what can i do now. I am trapped. I left the job and now am affraid that i should pay the money about 5000 ruppes. I can't afford that. If i don't pay the money i will be facing legal action. What will i do