Billing date not done as per request.Charges accumulated from bank and Telkom.

My number is ********** 136 and invoice no ********** 526 explain why my deduction is still the 25th while I have called and sent a request that the billing date as was agreed to be on the 1st.Now you deducted on the 25th and there was no money in my account. I have accumulated charges from my bank and your payment bounced back it only went through on the 31st and now I have been charged by you and owe R706.16 which I have no idea why am I owing this as it was confirmed by the consultant on the phone going forward my billing date is the 1st but then you are still deducting on the 25th.Is there something I should do to make this right.I pay R150.38 as per our agreement and it won't be fair to pay R706.16 while I have requested the billing date to be changed and was done by your consultant to be on the 1st.Please rectify this asap.When is this contract ending I am tired of Telkom service,I called the contact center yesterday with no luck my airtime finished.I need someone to contact me.I am so upset now I am about to go to Hello Peter.