[Resolved]  Nexon Enterprise Pvt Ltd — fraud call for demanding money

Dear sir,
I have got a call from the advocate today threatening me that they will file fir against me because i didn't complete the online captcha work, they are talking very rudely and asking for money for that and saying if i don't do that they will lodge a fir within two days in my nearby police station, as i was not agree to work with them, they sent me a mail and asked me to register but i didn't do that, they have signed the agreement by their own and now threatening me.
So kindly help me to come out from this problem and take proper action against these fraud people.
Thank you
Md rajik hussen