Terrible Service

I have a contract with Telkom Mobile. I called in at the end of August 2015 to change the bank details of my monthly debit order .The person who took my call forgot to change my details. On the 12th October I was informed that my services would be suspended because I failed to pay my instalment. The instalment was not paid because Telkom Mobile tried to get the payment from the old bank account because they failed to update my details as per the request. Due to Telkom's negligence I have incurred bank charges and a negative mark on my credit record. On 12/10/2015 I was told that I would be contacted on the 13/10/2015 so that I can lodge an official complaint and discuss how I would be compensated. It's 14/10/2015 and I have not been contacted by any representative of Telkom. This is the same Telkom Mobile that charged me for repairs of a device that was still under warranty. Do not enter into a contract with Telkom Mobile. They are *********** and they do not care about their customers. I would like to be compensated and cancel my contract.