MP Services, Latur review: data entry work

I got a call from MP Services regarding online form filling work. Except other services they are not taking money in advance but they told to deduct money from my earning from that work or have to pay Rs. 5000/- if I will fail in submitting the work within 10 days. So I started working on the same. On second day I found on internet about the Mp services fraud, so I stopped working. I messaged employee (who gave me work) about the fraud details. but she didn't even reply, even their customer care number is also cannot be connected. I have all proof for that conversation. After 11 days I got call from Advocate name Yashvant Singh and he is threatening me to pay penalty amount and now he has send me legal notice on mail through id associateadvocate08@gmail.com and advocateyashvantdesai0021@gmail.com. Also sending me messages through BT-LEGALD about notice warning.