Unauthorised limit increase on account

So I posted last week that there was an unauthorised limit increase done on my data contract and since then I have received feedback from Theodora on Friday 10 November apologising and saying cell c did make a mistake and I would be credited for the limit increase that i was forced to pay as my lines were all suspended!! Well I thought the nightmare was over but today my lines were suspended and when I called customer care, to add to my frustration I got this agent who asks me how I am and obviously I am not good as my lines were suspended which is what I told her and she goes off at me saying I should learn to introduce myself and not jus say I am not good and then she cuts the call on me!!!!!! Omg I have NEVER in my entire like come across such pathetic customer service!! What is cell c doing?? I am beyond upset to the point that I want to take legal action against cell c for all the inconvenience and utter disregard to their clients and for doing whatever they feel like with our accounts!!! Can someone please help me here!! Surely this can't go on and companies get away with such things!!! I have a stressful job and I travel a while to get home daily so now that my lines have been suspended for whatever reason I am left exposed without any communication with my family for the time I will be travelling!!! This has to stop!!!!! Someone please help with this!!