Can't cancel contract

I've been calling the call centre almost every day for just over a week now in order to cancel my contract. Each time the agent promises to e-mail the request to the \retentions department\" who they promise will get back to me within 48 hours. Each time they request an e-mail address they already have on file and each time I have to start afresh with the request as there seems to be no tracking other than the promise to send the e-mail. Is it asking too much to be CC'd on that e-mail? Each time they threaten me with having to pay a non-specified fee which I know is small.<br> <br> Once, I got an e-mail from what I presume is this \"retentions department\". However it seemed they were more interested in discussing my reasons for leaving since after I told them my reasons and requested they cancel it, they didn't reply again. Its getting frustrating and its starting to feel a little like this is intentionally designed to keep people trapped in their contracts. It didn't take this long to get the contract.<br> <br> I'm determined to cancel my contract since the rates I'm being charged are almost triple what I could get on prepaid on MTN itself and I only got the SIM card so there's no benefit at all"