Not Receiving paid for Service MTN

I am now at a point where I had to lay a complaint here because I tried multiple time to get through to MTN to let them know about the problem in their network. Firstly I had bought Rush hour data and every time I tried to use it the service would say i don't have funds. I tried also night express and that also did the same thing but when you buy normal expensive data like a 1GIG for R160 then all works fine but when you try and use their other offerings like Rush hour and Night Express the service does not work and the data ends up expiring and I loose money and on top of that a huge inconvenience as I buy the data to specifically do something. I had been trying to get this resolve and also get my money back as the data expired without me being able to use it to till now to no avail. I have been trying to get this problem sorted for the past 3 weeks. I am leaving MTN now because this is not how you treat a client.