Blocked phone due to error from Cellc side

Writing this review in the hope that I can finally get some help from Cellc to solve this problem once and for all.

My phone has been blocked for the last two weeks due to the fact that Cellc say I owe them money.. Yet my account has always been paid in full and on time. I have spoken to numerous customer service agents and managers.. and I have sent email after email.. all with no real results. Cell c is saying that I owe them money for a penalty they charged me in June, due to a late payment. However, I actually phoned, notified and arranged for the late payment before that payment was even due. So Cellc charged me a penalty fee, even though I had made arrangements and notified them before the time. This is what I am disagreement with them about, but their feedback keep going in circles and no one at cell c actually listens to my problem..

The penalty which they say I owe them, should never have been charged to the account.. At one point a manager at cellc actually stated this fact, apologized on behalf of cell c, opened my line and said that he will escalate it to the right people to fix the error... Yet, two days later my phone was blocked again and the same reasons were given to me on enquiry.. Just when I think the problem is solved.. we circle back to start all over.. and they don't listen.. Plus the manager who assisted me is avoiding me now... Not calling me back on request.. and always busy or out when I call..

In the meantime my phone stays blocked and I feel like there is nothing I can do about it, other than hope to get a better response after this review.

Absolutely pathetic service from Cellc.. as usual