BSNL and MTNL users can activate the Do Not Disturb (DND) service to get rid of unwanted telemarketing calls to their phone numbers. After activating this service, they will stop accepting these calls to the number. There are two ways to activate the non-disturbing service. They are calls and SMS.
How to activate DND service via SMS to BSNL or MTNL number
First you have to send from START to 1909. By doing this, the Full Dust Disturb service will be activated on your BSNL or MTNL number. BSNL or MTNL users can also start Do Not Disturb (DND) service to their number through phone call or SMS.
How to activate DND service by calling BSNL or MTNL number
To start the Dont Disturb service by calling, you need to call 1909 and then follow the instructions mentioned. This will start the service on your BSNL or MTNL number.