Drl Solution — I am complaining about fraud and threatening

Sir/Mam,
one of the client from drl solution names- Mantra Diwan, phone no.[protected] texted me on whats app from online home based job for which i had to pay a sum of few ammount.I did not pay them any rupees but after few days she texted me again saying that it is a free of cost registration fee job for which you can apply.I showed my interest for the job she asked me to provide a legal goverment id and email id.I gave her a picture of my voter id card and my email id.
further she asked me to open my email on which she had provided a mail containing a link.She told me to click on that link and verify my mobile number but the email that she sent was not in my inbox it came into spam folder under the email id.
I asked her "Mam Why the mail that you sent to me is in spam folder" She replied Sir sometimes it happens but you don't worry, Carry on with link. i said Okk mam

But this thing was punching my mind again again that why the email sent by her was a spam mail..
So i downloaded Truecaller app and searched her number on truecaller
The number was also a spam Number.
Then i refused them to work.
after this process they sent me agreement of the company, "I don't know which company provides agreement after the registration, By rule first you have to get agreement signed and then register a user"
Now they are threating me that they will take a legal action on me also they asked for 6700 rupess as a penalty for closing the account
i told them when there was no registration charge of making an id then why you people are asking for money to close it. I will not pay any ammount at any cost, i have every screenshot of their concersation each and every call recording and the very important thing that i refused them for work before taking work. Indian constitution also says that a person is independent to work..
Sir please help me !!