Nexon Enterprises — captcha part time work

Address:

122001

I am hemant kumar from distt alwar state rajasthan.
On 23/09/2019 i received a call from nexon enterprises captch part time job.
They ask me that you will get 10000 captcha, you would have to complete 9000 captch with in 10 days.
They ask me to send id and mail id for registration.
I send both to them.
They send me agreement copy without my permission.
Also send me user id aur password.
But now i calling them they are not receive call or reply me on whatsapp.
Also demanding me for 5200rs for registration.
I think they are fraud & i read the views of nexon enterprises i think they will try to blackmail me.