Hathway — Getting repeated calls after internet connection termination

Hi,
I terminated hathway internet connection 4 years back. however I am still getting repeated calls from hathway for the renewal. I told them several times, not interested and using some other service provider. however they keep calling everyday multiple times and its getting annoyed.

Have reported to those officers, but the call keep coming everyday. kindly file a compliance against them and resolve this matter at the earliest.

Regards,
Sankar
my contact number [protected]