What is going on with MTN

So we have a fixed lte package that is serviced by MTN. Needless to say its been of no good to us since day one,it worked for 30 minutes and just died. Been back and forth and without internet now for 2 weeks. My wife managed to get to a MTN store in town and found that we were not the only ones with this particular problem. Apparently our area does not have fixed lte but normal 4G. So how is it that the store could pick this up and not MTN technical people? It is shocking that people are so slack at doing their work. And we still went and asked all the required questions to be sure we had all our ducks in a row. So my question is now this,what is MTN doing to sort out their own mess and who can one report them to since their technical department seem to just be playing around while we have been throwing away money and had no internet for tje last 2 weeks?