Horrific Experience with MTN

I've work in call centre and in Customer Service and NEVER in my life have I had as poor an experience as I have had with MTN. It has been TWO MONTHS since I made a payment of up-to R9, 300+ to have my line re-instated and if it's not the absolute HORRIFIC service of their call centre (PS. I work in call centre, I am an Operations Manager, and fire employees for this kind of work avoidance), to the in-store who are decent but do not know their processes or EVEN (shockingly!) their Legal team, who do not know what they're doing. WHAT DO I NEED TO DO TO HAVE MY LINE RE-INSTATED?! They have advised allow 2-24 hours a month ago! Where does this need to go to get the right attention?! I'm being passed pillar to post, when I have made the payment as per the call centre, as per the in-store consultant and as per the Legal team - but NOTHING!