unnessesary charges

I went to change my debit order dates, only to find that an *********** consultant did not change the dates. The debit orders went thru and I have been charged R115 for each failed debit order, of which is not my fault. I reported this matter to the team leader which takes her forever to resolve this matter. I also provided her with the prove that on that day I was changing all my debit orders. I feel like taking my account to the other bank.