If you have tried everything else to get your network operator to stop sending you unsolicited text messages to no avail, the Nigerian Communications Commission (NCC) says that you can request to be placed on a “Do Not Disturb” list.
Do you know that your network provider can put you in a "Do not disturb List' if you do not want to receive unsolicited text messages?
— ncc.gov.ng (@NgComCommission) November 19, 2015
So, if this SMS shortcode feature has failed you, you can talk to your network operator.
Now, before you dismiss this and conclude that your operator won’t do this if you request, do remember that the NCC seems to have found its teeth and everyone is scrambling to put their house in order. Call or go to a customer care centre to demand this from your operator. If they do not comply, file a complaint with the NCC. Something is bound to give.
To file a complaint to the NCC, call 622 toll free, 8:30 am – 8:00pm, Monday to Saturday