Oxylite Solutions — blackmailing for money, oxylite solutions

Address:

820 alpha tower opposite lendra bank it park road ramdaspath nagpur Maharashtra, Nagpur, Maharashtra, 334001

I'm stuck with this company oxylite solutions. They gave me a pretty good deal so i signed a contract. According to that. If i breach any policy i've to pay them alot of money. They played well. They gave me id n password. After 2 days it didn't work. Ofcourse. It was their portal afterall. They didn't reply me in 8 days working period. Now they started blackmail. Yea. A fake lawyer called me n asked me to do a settlement with the so called company.in approx 50000 rs.
I'm totally under depression now. Don't know what to do. This is gonna be the biggest regret of my life. I know alot of peole have stucked in this. If anyone already got out from this trap. Please tell me how.
I have a doubt "is that contract legal" i mean anyone can make it on internet n signed over internet. They can really file a case against me.??
I really need you guys. Thanks.