Fraud job scam - i need legal advice about digital signature contract

There is some fraud conpany who offered me job last week on 2nd june and it seems okay when they told me all the benefits of the job and she asked me following docs and digital signature and after an hour I randomly searched about this company and there are lots of reviews and complaints registered against this company. That it’s fake and they trapped many people in the same situation before. I sent the lady screenshots and ask her..she didn’t replied and i told her you are fraud company..I don’t want to do work for you. Then I blocked them. Now they are asking the same thing from me. According to contract pay 6500 rs or they will send a legal notice and also they will distroy my cibil score. I really need legal advice to deal with this company. I don’t know if it exist or not. I’m scared I’m getting mail and messages