How to Enable Do-Not-Disturb Mode in your MTN Nigeria SIM
Learn how you can pick and choose what message to receive from MTN.
MTN Do-not-disturb (DND) allows MTN customers to opt out of receiving promotional messages for 3rd Party services (Bulk SMS, VAS promos, etc.). You can do this by sending the service code to 2442. The service also allow you to unsubscribe from recieving all promotional messages.
A fine tutorial has been written on EwtNet news website on how you can stop unwanted SMS from your network provider. It's pretty straightforward and easy to comprehend.