Hathway Cable & Datacom — unwanted spam calls

Address:

500062

Fed up beyond limits, because of the no. Of calls i receive from hathway customer care.
I used to hold a hathway account about 2 months back. But i shifted my residence and hathway refused to provide their services in the new location. So now i have nothing to do with hathway. But the calls are unstoppable! I have informed the customer care and have been patiently telling all executives to delete my no. From their calling list, but to no avail. Its torturous