Application Process taking forever

My daughter app**** for a contract on the 13/12/2017 online. However they contacted her on 14/12/2017 and did the application via the telephone. Today is the 19/12/2017 each time she contacted them they say it's under investigation... Only to find out that they 1st need to debit her bank account in order for them to tell her the application was approved or decline... The debit is not the problem, however this wasn't told to her when she did the application it was said that she will pay the pro-rata and the monthly instalment 15/01/2018. So her question to Telkom is if there isn't money in my account on the day you decide to debit my account my application will not be approved because you will debit my account on a day that the call centre agent can not confirm.