What a joke...

Have an iPad through FNB which I am still paying off. I have not used it for a while but when I tried to buy data via my cellphone, I get a message saying number does not exist.. I then phoned Cell C customer care on Sunday 13 Dec. Agent answers and puts me through to technician after leaving me hanging on for at least 10 mins. Technician responds and I explain problem and he says not to worry, he will unblock it and after 5 mins I must try again to buy data and all will be solved...ja right...when I try, still same problem. Phone call centre again and no reply. Next day phone again and new agent explains that whatever technician told me was absolute lies - because I haven't used iPad for a while, my number has been recycled but I must phone again in the morning. Phone again, am told the technical head will phone me back to sort this out and what do you know...nobody has phoned!!! Crazily, I am still paying iPad off so who the heck gives them the right to recycle my number if I am still paying the device off? Surely it should be my prerogative to use the number allocated to me as and when I wish? Cell-C, sorry but your service is beyond pathetic and I suggest you sort this out