Glob Technology — harassment for money

Address:	jhalda,purulia,west bengal-723202, Purulia, West Bengal, 723202
Website:	glob technology

Hi,
I was offered a freelancing job by this company named glob technology based in gujarat as they claim. They sent an agreement on email and asked for my pan card and adhar card. I provided them my id proofs, but then i found their company claims fishy.
Now, they are constantly harassing me to pay them rs. 1, 80, 000 in cash or they will drag me to court. My query is just that when i haven't signed any contract with them, how can they harass me to pay them. This company is fraud and scamming innocent people.
They are calling since 2-3days, sending message for case file. They demanding to legal action