Debit order date

Called on 14 September to change debit order date call ***. She did not change it. So on 26 September I phoned again after receiving an sms regarding the debit order and logged a service request. On 30 September I received a sms from vodacom stating that because they only now changed the debit order date, it will go of on the 2 October. So today I received an sms that my debit order was unpaid, my bank was not even debited! Why so difficult just to change a debit date?Now I am going to pay fees on my vodacom account and my bank account. That is not fair. It cost money to let debit orders run! I phoned the *** today to try and explain and the consultant not even trying to assist after explaining the whole story, just say debit order is on the 1 of every month. I know that! Her name is Porcia and she dropped the phone in my ear. I called 082 111, explained the whole thing again, and spoke to a consultant and she is also not clearly listening properly. I am tired of explaining, so I am not calling again. Please can someone from vodacom just fix this. I am really disappointed with the service I am receiving