Its sometimes irritating when receiving lots of advert messages from mtn, my device is almost loaded with their messages but now there's a way out if you’re also among those getting various texts from these popular mtn short codes – 5021, 5020, 5030, 5031 & 4100.
To stop the Messages Simply send a text message STOP to 33111.
You should get feedback sms that says:
“You will be removed from our campaign database within 24hrs. Thank you”
Don't forget to share to others 🙂 👍