Deduction of Payment

In November 2017 my payment and agreement was that my account must be deducted on the 25th of each month. November 2017 some clever backoffice member like they call them self though that is good to deduct my payment on 24th November 2017. I called Telkom on 25th November 2017 and had words wirh hom like it is the customer all ways comes 2nd. I immediately make the November 2017 payment on 25th. Told him that he need to set my account right and that I am not going to be paying good for the Bank costs due that it was Telkom mistake and not keeping to their contact policies. He told me that he would set it right immediately. But how clever he was he did not. I have received my invoice for payment in December 2017 and noted that a amount of R200. 64 I have to pay because there was not enough funds to to pay my account in my Banking account. I called Telekom at 8h15 on the 21st December 2017 and requested an investigation they gave me assurance that they will come back to me withing 48 mim nothing of that kind have transpired. Today the dedication of R603 was made from Telkom witch was wrong. I called 07h45 on 28 December 2017 spoke to a call center lady explaining to her what have transpired. She promised me that her manager will call me back as she was on her way to a meeting and that she will send the back office staff a mail to sort out my concerns. Also told me that Telekom will refund me by end of today. At 13h05 I called again then I was told by a agent that I could not speak to her manager I insisted that I would like to speak to her manager she put me on hold for 38min came back telling me that her manager will call me before end of day. This is 18h39 long time overdue of their work day no one called me. Telkom is a ******* and we as the public just have to be happy with their **** that they are telling us the public just to get us off their case.