Constant SPAM on default MTN Numbers

I constantly (sometimes up to 5 within a minute) receive spam messages on default MTN Numbers, most notable MTN141. I cannot even add this number to spam messages on my phone as it is blocked by MTN.<br> <br> I requested before that spam messages be disabled, but I just keep receiving them NON STOP. I never willfully requested to received these marketing and promotions messages. <br> <br> Based on the my search criteria on HelloPeter, I see I am not the only one experiencing this exact same problem and even with MTN responding, saying the number will be removed from marketing related information, they still keep receiving this messages.