I am beyond mad!!!

I am so mad at MTN right now, I've been struggling for more than a week to do a sim swop, my phone was ****** and they blacklisted the phone and blocked the sim card but now they can't unblock the sim, does that even make sense. The store is unable to perfom a sim swop because apparently the number is barred but they also not making it a priority to sort it out i have to keep calling after them, when i call customer care each person tells me the number is active i even emailed complaints but they told me the same thing, but the sim card is not working on my side. Yesterday i spoke to a lady and she told me the number is on hard suspension and that she will escalate it but even now there is still no feedback, why am i paying for a service but i am not prioritized and even so i am a business client, Monday i have to go back to work and i will need the number but i am not getting any assistance, i even got the new phone but i can't use it because my number is still not active.