Disgusted by MTN's service!!!!!!!

I am appalled at the service Ive been receiving at MTN. I have been a loyal customer for 20 years, had contracts for 10 of those years and the service I am receiving currently is frustrating to say the least. I am trying to get hold of their legal department to sort out an issue as one of my contracts' upgrade was declined a month after I upgraded the other one, which does not even makes sense. Anyway, went in to branch, they dont even offer to help, spoke with customer care and upgrade department around 10 times, everyone gives me the run around, logs tickets incorrectly or does not understand what Im talking about. No man, this is ridiculous!!! I am fuming as Im typing this.