DEBIT ORDER DATE CHANGE NOT HONOURED

I called on the 11/13/2015 @ 13h50 to change the debit order date to the 26th effective March 2015 and spoke to a consultant who said all is changed and to my suprise they debited my account today 24/03/2015 and when I made a follow up call today I had to wait on the line for more that 12minutes without any response and was put on hold for more than 3 minutes.I had to put the phone down and the consultant did not even to bother to call me back.What a waste of my resouces ...my money and my time as the call for the 11th lasteed for more that 12 minutes and today s call also was more than 10 minutes