Hathway — Too many sales calls (avg. 3-5 per day)

Address:

Kothrud, Pune, India

I had a Hathway internet connection which I stopped using since Oct 2020. But since I had paid Hathway internet connection charges till Apr 2021, the prepaid account was active. Once the account expired, they started chasing me for renewal. I have clearly conveyed the message that I'm not interested in renewal and I want to disconnect the service completely. This was conveyed to them via call and e-mail. Still I get avg. 3-5 calls per day from them for renewal. I even complained to them about high frequency of calls, to which they promised to add my number to DND so that I don't get further calls. But everything has gone in vain. I continue to get the calls even today even after repeated complaints.
I demand a penalty for harassing me continuously.