[Resolved]  HDFC Bank — getting too many calls for different products of hdfc

I am getting too many calls from HDFC for different products they offer. My number is already registered on DND registry still i guess they are not bothered. every time they call i ask them to take my number off their list but they don't. Last call i got was from a guy named Varun with phone number [protected]. i asked him how many times will they call me when i have already said no to their services. He replied he is calling the first time and he is not responsible for other agents who are calling. i did asked him where did he got my number from and he told me that he is from HDFC bank and he got the number from bank stating that the bank has asked him to call. I never subscribed for this. He was very rude with an attitude as if i have done something wrong. The moment i started asking questions he hung up the phone and since then its not reachable. I am not sure why i am getting these many phone calls from last 2 months. They keep calling from 11 AM till 7 PM 10-15 calls per day which is really frustrating.