Shocking service from call centre

I have been a Cell C contract customer for many years, but recently switch over to prepaid when my contract matured. I was promised that I receive an amount back as my debit order collected, but my contract was cancelled already. I have been having numerous issues since switching over to prepaid. When the balance gets to about R3, I can no longer make calls, use USSD. I keep restarting the phone, but the problem persists. Last night I phoned your call centre to ask for advice and get clarity on the emergency airtime option. I was assisted by Siphele from the KZN call centre. He was impatient, somewhat rude, and when I kept asking him questions, he dropped the call. SHOCKING! I called back immediately, got through to Siyabonga, seemingly also from the KZN call centre (there was some staff number JHB10126), I explained to him that I would like to log a complaint and ask to be put through to a line manager or a supervisor, I was on hold for almost 9 minutes before the phone was answered again, not by a line manager or supervisor, but by another consultant. So in essence I was just put back in your call queue. This is absolutely awful. I was assisted by Hlengiwe Dlamini, who was kind and patient, who kept me informed of what she was doing while we were talking, she empathized with my situation and gave me tips on saving costs. I find it appalling to have received this horrible service since switching to prepaid, I understand that different consultants work with certain designations. But to be treated as poorly as this is quite shocking. I will be switching to another network once my refund has been processed, if your staff cannot treat their customers a certain way then why should I spend my money on you.