Three months wait before a new bank account can be used for a debit order!

I had a debit from Apple London and could not stop the debit. I even got a new bank card and was told that it does not help because mastercard advises the Apple of the card number change. I failed with Apple and it was easier closing my account and opening a new one. Then I called Cell C 135 to advise of the new account number. The consultant (Precious) told me that I would have to wait for 3 months for the bank account to be active before I could use it to debit my account. I then asked to speak to a team leader (Nonku) who was not available (team leaders are generally busy in meetings or on lunch or tea). I aked to wait until she was finished. Fifteen minutes later the consultant told me to put the phone down and the Team Leader will immediately call me back. Two hours later, I am writing this complaint because there was no call from the Team Leader. I cannot believe that Cell C has a policy that I must wait 3 months for the account to be active before they will use it to debit me. In the meantime, I must do an eft or pay cash. I asked a neighbour to assist and she used the Cell C App and loaded the new account number. 2nd hand service is the norm. We celebrate mediocrity. Oh, I could not be transferred to credit control because they will not entertain my call.