[Resolved]  Airtel — DND activation not done in 3months

The day I activated my SIM, the same day I made request for DND activation. Airtel call centre person told me that it will be activated within 40days. What a hell! even after 40days I kept on getting business cals and SMSs. I called 121 again and they promised the same and also told me that I have made no request!!!!! This time I asked the name of the person I was talking to, she gave me the name. What a fun, after another 40days I was disturbed with same calls and SMSs. When I again called 121, they told me the same story. When asked about the female I talked earlier, hey said no one with that name was ever engaged with their call center. I asked them for my last calls audio recording, they simply refused without knowing that I have the same recording with me which I can produce.

WHAT TO DO TO STOP SUCH CALLS AND SMSs please