Tech Work Solutions — Online job fraud & blackmailing

I got a job offer from this company... they said i have to fill 600 forms in 5 days... if i am unable to complete them... i have to pay 6500 as registration fees... but i cant even log in... i keep asking them help for it but they just ignored it... & they didnt send any work emails or nothing...
after 6 days i got an email from them saying that i am not able to complete the given task... and now i have to pay them the registration fees... i told them i cant even log in & didnt get any help regarding it... and they claim that they send me work emails stuff ... which i never get... they started blackmailing me saying if i didnt pay the registration amount they will file a complain against me... that i can just clear it all up by giving them 6500₹ or if they get in court i will later have to pay 1lakh to 1.5lakh to them... i told them them to do whatever coz i was not wrong & not afraid and i also came to know that they r fake company and there r many people who had already complained against them... so i blocked that number... later yesterday i got a call saying... he is talking from supreme court of "Ahemdabad"(we all know there is only one supreme court thats in Dehli)...his name is Advocate Dinesh Singh... and that there is a case filed against me by tech work solution company... i told him that company is fraud & there are already cases filed again it in consumer support & cyber security... so he started blackmailing me saying do u wanna get the case solved or wanna take it to court... i told him that i am gonna file a complain against them in consumer support and ended the call... today i recieved another message saying that if i didnt pay them they have issued legal notice on me... please help me... they keep doing blackmail calls... i am a student they are mentally torturing me... please help