DND not activated

I had called airtel customer care on 1st December and registered on DND in the fully blocked category. My DND registered no. is 1070347676. i had been told that my DND will be activated after 7 days. bt 15 days are over & still i get messages from AD- 54321. I want my DND to be activated ASAP. and stop receiveing messages from Airtel. Continue reading