Telkom cancellations nightmare!

I called telkom to cancel my cellphone contract as it was coming to an end. I did this a month in advance and was told to wait for the end of the month to call again to cancel. I went to the branch 3 days before the end date and I was told to come on the last day. I called telkom again on the last day and a very rude consultant 'assisted' and said they have sent a request through to cancellation. I asked for a reference number and they dismissed my request stating that a reference number will be sent to my alternative number by the cancellation department. Today my account was recharged with data and airtime, meaning the contract still continues! They don't even have an email address where we can send cancellation requests. The retentions department on the phone will put you on hold for more than 40 minutes, unacceptable!