[Resolved]  JustDial.com — repeated phone calls for subscription to past customer

Justdial is contacting me and making a nuisance by repeated calls for subscribing as in past I was a customer of Just Dial. They call from different number everytime or mostly so we cannot even block the number. It is really very much a nuisance and should be debarred from doing business. They say what is the problem that we are not subscribing to the service ! Very cheeky company...Called yesterday itself when I was out of town.
I am on DNC list, still they call and disturb...
I do not want any further nuisance calls from Justdial.
Moreover they talk big about their crores of business from here and there and give very shabby if no service but only frustration. Avoid them...