unfair treatment

This is the second time i have been complaining about MTN Direct how when i upgraded my contract in May this year they never explained to me that my new contract was an open contract , I earlier sent a complaint on this platform and MTN responded through a lady called Nompumelelo Mashinini who asked for me to send a copy of my contract which i did on the 29th September and she has never got back to me since then .So clearly this was done to make MTN look good on this platform to look like they care when they clearly are not taking my issue seriously . I have just received a text message on my phone today stating that my phone has been suspended to make outgoing calls on the MTN network . I have been paying all my bills on time and i am contesting this out of bundle bill i feel I'm not liable for . I'm really disgusted with the service i need to seriously leave MTN cause they have treated me unfairly and need to take responsibility of their mess . If there is any justice out there could someone help me <br>