Airtel — Broadband / Fixed Line

I had procured a broadband/fixed line connection from Airtel from May 2020.
Currently I am trying to get my connection discontinued. I had raised a deactivation/disconnection request on Jan 29 2021 via email to [protected]@airtel.com. I also got a confirmation email that my connection is deactivated on the same day.
After which daily I started getting calls to transfer my connection to someone else on my name and suddenly today my connected has been reactivated.

Today Feb 4th 2020, I have received an email from [protected]@airtel.com saying that my connection is still active, when I have repeatedly told them to disconnect my connection.

Airtel Service personal are wantedly trying to keep my account active. So that my account will enter another billing cycle and so they can cheat and extract money from me.