Bad services

I phone vodacom because of me not receiving salary one month and asked to change my debit order to the 10th of each month the consultant never told me that the premium following month going to be double next month i phone and asked to change my debit order again to the 1st as it was then they told me they are going to take double premium explain to them that it was never told to me and the manager told me that they will listing to the recording and refund the unpaid of my bank account , never come back to me email vodacom but nothing yet today i received sms that they canceled my debit order from my bank phone in and explain situation to them nothing solved please assist me.