MTN is *****ing my money every month and no one cares!!!

A consultant called me in November offering a reduction in my package which I accepted them my charge was doubled!!! I cannot get through on the phone to mtn.! Then I asked the mtn sales consultant who deals with our business account to check what is going on and he said we took a new handset etc. Which is not true. I need my money back from Nov and this resolved pls. Now the number has been disconnected and i have no answer why. No communication from MTN and no answer to twitter or facebook messenger. This is the worst customer service I have ever experienced. MTN you have absolutely no customer service! I cannot get through to speak to anyone, the branch refers me to the HQ, the HQ is unreachable, I had a message from a lady via messenger after my last rant but this has prove to be just as "non-service" as the rest. Maybe this is your core business strategy = don't provide any service but con them and take their money! Where can I go next? Consumer council, stage a sit in? 702? Ombudsman? MTN CEO??????????? Pls can someone call me????I am paying for a new handset I never received or signed for and a very expensive contract I never took out?? Which is now disconnected but I am still paying???