Hathway — Hathway harassment / torture by daily calls.

I had used Hathway internet connection when I was in Noida till Mar-2020, However due to Covid-19 I had shifted my self to my home location thus I completely left the Noida. Prior to leaving from Noida I had made multiple approaches (Email, Phone Tweets) to Hathway for uninstalling my connection however I didn't get any response on the same.
post some days I am started getting many calls in day for recharging the account, I made them that I have relocated to remote location and I don't require any renewal etc, I informed this approx. 1000 times and they told that we will update this in system so from next time you will not get this call however It didn't work still I get daily calls from various unknown number which are harassing me.
can you please help me to stop this harassment and torture.
My connection id- [protected]