Crystal Wave Technologies — crystal wave technologies - they are forcing me to pay the registration fee 4560 plus for unblocking my account 7999

Address:

Sector 11, Gandhinagar, Gujarat

I got a form fill up project from this company. According to the company In 5days I had to complete and submit 520 forms or 468 forms. So I started my work on 27th Nov 2019. After starting my work there was some Internet issue, even when I was doing the project many times the software telling me to log in again, so that time I stopped the work and started to call the man who gave me this project. I was calling him for asking what should I do and I'm having an automatically login problem in my account. He didn't pick up then later his phone was switched off, even I tired to contact to the customer care they aren't picking up. I have sent emails but they weren't replying And now when my deadline is over they are calling me from different numbers and threatening me for payment which is cost 4560(registration fee) plus now they are telling me to pay 7999 for unblocking my account.
I told them that this was not my fault, and requested them to give me another work cause I can't pay this much money cause I'm a student. So they are now threatening me and harassing me to pay the particular amount immediately or otherwise they will file a fir against me.
Please do something about this. I'm helpless