Extremely dissatisfying service

I have experience nothing but terrible service from MTN when it comes to them having to solve a query that was their fault to begin with. the query dates back to 09 February and has since escalated since then because I constantly deal with different people and nobody assists to their best of their abilities. I have since laid a complaint with their complaints department via email on the 09 May and I am still to receive a response, even when you contact their contact Centre, the so called managers are not able to assist - all they are good for over the phone is telling me that they have escalated the query! I have requested phone recording, that has not been sent / honored, I have sent in screenshots of proof of online chats, that hasnt been attended to, I have had to communicate with MTN using multiple stream of communication and nobody was able to assist! I was told that all is well, then I like a fool went ahead an upgraded my contract only to find out that nothing has been resolved! I am beyond an irate customer at this point!