MTN is ***********

I’m tired of MTN. They keep saying I’m in collections while collections says they owe me but no one can help me to unlock my account. 4 months already trying to solve this being sent from pillar to post. How hard can it be to help just one client?? Now I can’t cancel or upgrade or change any of my contract details because no one can while the system says I’m under collections. The collections department is useless because they will just tell me my account is fine without escalating the issue and get it resolved. The MTN Stores can’t help either they send me right back to collections. Now I’m paying for a home WIFI that doesn’t work because no one can change any of my details or address while account is locked. What kind of Mickey Mouse business is this ????