Cell C - pathetic service

Absolutely pathetic service from Cell C Customer service. I honestly don't think that these people know the meaning of customer service. On 29 July this year I canceled one of my contracts will Cell C. I contacted the call center to enquire what the paid up balance would be in order to cancel the service. An amount was provided by the agent, which I then paid. I asked that the contract be canceled and this was confirmed. Two months later I contacted them again with regard to another contract of mine which I had erroneously overpaid and asked for a refund. I was told that this would be done within 48 hours. I was given THREE reference numbers confirming this discussion. A week later and no response. So I contacted them again to follow up - only to be told that my account is in arrears (remember there was a double payment). I then discovered that the other account was never canceled as requested, despite paying the exact amount as instructed to by the agent. CELL C is now refusing to refund me - through no fault of my own. I was transferred from pillar to post and spoke to six different agents this morning and still no solution to my problem. No wonder they are in financial turmoil.