Cell c *****

In April this year, someone **********ly upgraded my Cell C contract ***). I opened a ***** case (***) and called every month to get feedback (as no one from Cell C bothered to contact me). In August I called the Call Centre AGAIN and was told my case had been resolved and closed. If I hadn't called in, I wonder when Cell C would've bothered to call me? They asked if I wished to keep my cell phone number and I declined, and they gave me confirmation to say that the account had been closed immediately and I would not be able to use that number. Today (25/11/2015) to my utter shock I receive am SMS from SSDA to state that I have been handed over by Cell C for an amount of R294,00. I am not sure why I owe Cell C any money. Surely when my account was being closed, the call centre operator should've notified me if there was an amount outstanding? Why on earth do I owe cell c money when this was a ***** case ? To make matters worse I have called your call centre since 10:00am and have sat on hold for your legal department for hours on end and no one has answered my call. This is shocking service,I am tired of phoning for months on end and nothing gets done.