Vertex Solutions — Work from home

I had taken up a job for 5 days 500 pages . But without saying they made an agreement and made it for 11 months which I was not informed off and was only said after everything was done.. I informed them my laptop was not working so if the could give me a extended time or if I needed to pay penalty they did not reply to anything on the last day they started harrassing calls on call demanding to payy the penalty or a case will be filed in fear I paid it as it was my fault so I paid the penalty...now they r asking for 2lakhs if I want to cancel the agreement... Pls help they are saying they will send police home n drag me to court and using bad language like I can cut your tongue if you speak too much when I was asking them the details