Nv Technology — Blackmailing for money

I received a call from nv technology and asked me to do a job that is click 150 links for 10 days and you will get 5 rs per link. I agreed and after registration i came to know that it is fake. So i stopped working and now after 10 days an advocate sent me a notice in my mail. The advocate's name is maysha malik
Aurangabad, maharashtra (Mh)
Chamber number : 7
Bar council number : mh[protected]
They are calling from this number [protected] and asking me to deposit 3000/ - in company's bank account.
Its look like they black mailing me and threatening to making the payment.
So please if you could help me to teach them a lesson. It would be very helpful.