Nedbank's nuisance marketing strategy - enough already!

Could the man by the name of Melton from Nedbank tel no ********** or ********** 123, and the rest of his work cronies STOP harassing me and the rest of the world with your very unwelcome calls! I do not wish to have any business with such a nuisance bank, would be very interested if you could reply and explain to me and the rest of SA why you keep calling my number at all hours?