The most required facility to avoid annoying marketing messages on a GSM mobile number is BSNL DND, find how to activate Do Not Disturb services through SMS and IVRS modes for total categories and for some categories (banking, health, insurance, credit cards and more). Also, the customer can deactivate Do Not Disturb services from their ... Read moresource https://99-networks.com/bsnl-dnd-do-not-disturb-activation/
