[Resolved]  Qns Enterprise — qns enterprise threatening me to give money as penalty

I am shubhpreet. One day, i received call from the company for online form filling job. They give me legal agreement for my surety. I started my work but suddenly i had doubt that any company will give that 15000 amount for form filling. Then i searched u tube and found that is is fraud company. I didn't completed their work. Afterwards there advocate called me and said that there is breach of contract that i didn't completed their work and have to pay. On what's app when he messaged me i warned him that don't dare to messaged me otherwise i will launch fir against u that he didn't messages me on that. But he dropped text messages. Sir they give me soft copy of legal notice on my mail. And now they drop messages that they will send hard copy of this to my address. Please solve all issue.