Do-Not-Disturb (DND) numbers are numbers that have been blocked from receiving bulk SMS. These numbers might have been added on the DND list by default, by the service provider.
The procedure to unsubscribe from this policy is provided below;
For MTN lines, text ALLOW to 2442.
For AIRTEL lines, text OUT to 2442.
For GLO lines, text CANCEL to 2442.
For ETISALAT lines, text START to 2442.
To check your status, text STATUS to 2442