Terrible Service from Accounts Call Centre Agent

I opened a contract almost 2 years ago, and recently received my upgrade due notification. I called the retention dept. to request the upgrade and was told I have a 'payment profile' by Nzwake the service agent. He was supposed to transfer me to another department but he dropped the call instead. <br> I called back and got the direct number from another agent. I called the accounts department and spoke to Karabo (Male), who sounded absolutely uninterested and then proceeded to condescend me while telling me I owe R7166.78 for a contract I opened in 2007. <br> <br> He could not give me details about the contract. He said he would email the details to me, which he did not. When I asked why hasn't anyone tried to contact me regarding this contract, even though I have a current contract with Cell C, all he said was that 'they tried in 2009 and it was handed over to debt collectors. He then gave me a number for the debt collectors which is constantly engaged. <br> <br> I tried to call the Accounts dept. back but after holding for almost 20minutes, I dropped the call.<br> <br> This is disgraceful service.<br> <br>