Telkom never tells the truth or listens

I informed Telkom more than 2 weeks before the debit order that I am closing my bank account and they should use the new one. They advise me, due to it being open less than 3 months they cannot use it. Okay, I will pay in every salary date until you can load the debit order. Well now, I paid in, they still tried to deduct from the old account - which is now charging me fees - and they are adding an once off fee that I never paid in 6 years as a contract client. What the hell is going on. What is with the hidden costs. Tired of a consumer being **** to.