Telkom has poor service

I just spoke to Nomusa Gwaza which is a telkom consultant, I called to enquire about my account, I have a contract with telkom where by I pay 259 per month my debit order date I'd the 20th monthly, for the month of November telkom debited and debit order returned unpaid, however on the 26th on November the tracker debited the same amount an account was up to date December they debited double on the 20th instead of 1 installment I reversed it now today they tried to debit R923. 40 I called to ask what is the amount for the lady was so rude told me I'm behind, she does not know what I want and she will drop the call if I don't have anything to say, I asked her to speak to the superior, she said her supervisor was at home, I told her she need to be trained on how to handle the customers and try to resolve the issue not to be this rude or if she does not have or know the answer she must just say she does not know she hung up the call and my problem is still not resolved, telkom honesty the service is poor, the stuff is not professional at all