Hathway Cable & Datacom — getting call from hathway sending legal notice for properly closed broadband connection

Hi,

I used hathway internet 1.5 years back which is a connection. I requested to close the connection due to there bad customer response and they said ok. After a month or so an executive came and collected the hathway devices. However, i keep on receiving bills every month over email with a different account number on my name. I raised a support case over email to them, but there was no response from them. Finally, i got a call saying that they are calling from delhi high court there is a case lodged on me.

Why should i pay the amount if i had not used the service at all. I complained to stop connection and it was the failure of hathway support to stop connection irrespective of multiple reminders to stop connection and hathway saying to send the legal notice to me now? I am not ready to pay amount as i had not used the service. Moreover, my connection was prepaid.

This is harassment and instead legal action needs to be taken against them for this