Hathway Cable & Datacom — no connection even after payment!

Hi I just reopened my account [protected] and I didn't get any help from Hathaway. After repeated requests a Hathaway executive came handed over the modem on my society gate and asked me to get it working myself, I wasn’t happy but I agreed due to the current situation. Prior to this their representative told me to install this saying internet service is working so there wont be any problem installing, I asked him repeatedly are you sure considering the current situation, he said yes all Internet related services are functional and working, our executive will come and install so I was surprised but thought if he’s saying this so maybe it’s true, so I paid 1month charge of 500 rupees. This man has lied to make me buy the internet and I got no help from Hathaway, I still don’t have the broadband connection that I payed for! When I got no help I tried to talk to this man but he wasn't even picking up my calls when I was calling him!
I don’t want your connection now after all that has happened so refund my money as my internet is also not functional!
I have already tried mailing delhi Hathaway help desk, they also sent a mail saying an executive will revert back in 3 days but it has been 5 days no one has reverted! Today I got a message saying my balance is -4.4, I was surprised as just 5 days before I payed Hathaway 500 rupees for a connection that I didn’t get! I understand the current situation well and that’s why I asked their executive again and again whether it’s possible, to which he lied saying it will be done! Resorting to lies inorder to get a customer was very sad and distressing! Please refund my money and remove my number from your calling list as I don’t wish to take your service as you are causing mental harassment to me!