Cell C account STILL Blocked due to negligence and bad service!!

I received a call from Cell C yesterday afternoon, and I spoke to Derick Mocobele from the social media department. He first agreed with me that the payment I made last month, included April. Then he told me that my account cannot be unblocked due to an outstanding balance for November. I asked him if he went through the paperwork I sent them, and he just told me that he is working on their system. and according to that, I have a balance due for November 2015. What I don’t understand, is how can I go from having an outstanding balance for March( according to Nthabiseng in accounts) to an outstanding balance in November (according to Derick). I told Derick that he needs to go and check my account again, because clearly they don’t know what they are doing, because if I was now in fact in arrears for November, would I not have a 120+ day balance on my statement?? And all of my invoices reflected a current balance only for the current month... Derick rudely interrupted me a good couple of times, and he was not interested in listening to my side of the story. I asked if I could speak to a manager or supervisor, and Derick told me that they do not escalate queries, they handle it... Well clearly they don’t.... It is amazing to me, how I complain about bad service, and rude consultants, and I insisted on speaking to a manager or supervisor, and yet again I receive a call from a rude consultant... Does Cell C not learn??