MTN has lost its credibility

I upgraded my phone in the 23rd of April and I was loaded on the incorrect package. I have been dealing with MTN 135 but the frustration and ongoing calls has left me really frustrated and dissatisfied with MTN and how they deal with clients. It’s now a month and to date I sent my frustrated email to MTN customer care and MTN complaints and to date not even a call and no solution yet to my challenge. Dealing with 135 and the fact there are so many service providers within 135 and all can not confirm what each one handles is pathetic. The amount of calls with absolutely no resolve and I was told to return my phone to MTN pavilion, with no help from them even when they dealt with 135 that I was told to get a hold of complaints, well even they do not reply. The company that handled my upgrade has escalated the issue and will call when they are done and meanwhile I’m in the dilemma of the incorrect page and incorrect billing. It’s now the 25th May and I have heard no update except that my challenge has been escalated.