Nv Technology — nv technology-blackmailing to pay money

Address: Nv Technology,Khirdi Road, Aurangabad, Maharashtra, 671319

I am a degree 3rd year student. I applied for a part time data entry job on quikr. After some days i was contacted by a girl on 9mand asked me to do a video watching job. 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 which went into my spam. The advocate's name is adv mane b.com. Llb sai nath plaza, kava rd, majge nagar, aurangabad, maharashtra 431136.
They are asking me to deposit 3000/ + 1500/ - in company's bank account.
I know that they are fake and their notice and threatening are all fake but still if you could help me to teach them a lesson. I blocked their email and number. But they are keep contacting through other numbers and mail. Please help me