Global Star Solution — harassment

I got a call from this global star solutions for part time data entry work from home . They said 1000 form needs to be completed within 10 days with 100% accuracy. If completed they'll send 20k.
We agreed and started the work and got to know after 5 days its impossible to complete within 10 days so called that hr and she told to contact helpdesk number which was not at all reachable. Then after 10 days they sent mail like u need to be paying 5200 otherwise you will face legal action. They are complete fraud and cheating innocent people.

There is no company website at all and there is not even company logo in the mail. I wasted my time and effort on this.

We Advocate Associate hereby inform you that, Star solution company has send your file in our Advocate Associate firm to proceed further.
Before providing the work, we have given you demo work of the practical work, after confirmation of your’s company has done the registration and later you will receive the User id and password has been sent in your registered email address. Also we have your agreement, acceptance letter, id proof and voice verification.
You've to pay the Utility and maintenance charge to the Star solution company. We also suggest you that once you pay this amount in good faith we will issue your NOC letter within the stipulated time of 45 minutes. Hence, we insist you to pay your outstanding to our client in good faith, so we can close your file from our end.
Your agreement is mend with sole proprietor company for which you need to clear your dues as per an arbitrary and conciliation act of 1996 as per an article 14 as depicted in an agreement.

Account Name : Star solution
Account Number : [protected]
Bank Name : SBI
ISFC Code : SBIN0000488
Account type : Current
Amount : 7800/
BAR Number of Advocate: 2203/2016

Thank you.
Advocate Associate
Ashok desai
desaiashok.[protected]@gmail.com

Please Help me and tell me what to Do.

Thanks in Advance for any Help.

Thanks and Regards
Deepak Kumar
[protected]
[protected]@gmail.com