Nedbank changes debit orders like they want and ignore their customers!!!

I have a bond with Nedbank that has been serviced 100% on time for years without fail. This week at night 25/09 I get a sms to say my debit order is changed from the last day to the 27th and if I object I must sms "opt out" which I did Immediately. Knowing how useless service is, I phoned Nedbank the very next morning 26/09 at 08:00 to say nothing must change on my debit order. The lady tells me that everything is fine and it will go off on the last day as always. The very next day 27/09 I get sms's from my bank where Nedbank is trying to take the money. I had a suspicion this would happen and left my account empty. I however phoned them once again same day at 08:00 and this time a man confirmed everything is fine and it will only go off at month end. Today 29/09 I do my banking as normal just to see that they have in fact tried to take it on Friday irrespective of me objecting via sms and phoning twice and being told all is well. Today (Sunday) I transferred money to my account for all my monthly expenses and like vultures the debit order went off immediately!! Still a day before it had to!! Now my bank will charge me failed debit orders which is not my fault!! Nedbank has become useless and I am in the process of enquiring to move my bond. Out of principle Nedbank WILL reimburse any fees charged to my account, not to mention the time I wasted on their incompetence!!!!!!!!!!!