Cancelation of my Telkom Mobile account

I have been trying to cancel my Telkom Mobile account for the past 2 months. On 11/12/2015 I went to your Northgate branch to cancel my contract. A lady by the name of Olger assisted me and advised all would be in order. On 29/12/2015 I went back to the branch to do a follow up as my account was still open. One of her colleagues assisted to see what the holdup is and saw that she did not link my documents to the cancellation mail therefore the contract was not closed, Olger was also there and did not admit to her mistake, and did not act in a professional manner. On 30/12/2015 I returned to the branch as she advised that I would receive a follow up on 29/12/2015, which did not happen she also advised that the call centre would be in touch on 3 - 4 hours, which also did not happen. I have received communication advising that my account is in arrears (the payment was deducted on 31/12/2015 and consequently reversed on 02/01/2016, on the advice of your colleague Olger). I was billed for more than what I took the contract out for. Yesterday I sent an email as per your call centre consultant. To date this issue has not been resolved. I will report this case every 5days until it's sorted