I feel ****** with Rediculous Bank charges and failing to give proper explanation

Good Day, I just want to express how disappointed I am regarding my appalling bank charges that even your consultants (Nonhlanhla) at general enquiries division cannot explain I was on the call for 1hr . I do understand I had unpaid debit orders but my issue is how come I have debit orders that was not honored but am being charged almost R1000, that does not make sense to me. she tried to explain but her explanation was not clear , as far as I know I had 4 debit orders and she told me each is R150 plus R100 plus R80 plus R107 and also I had to pay previous months charges that is why I had R900 bank charges. I am going to close this account if yourselves you are not able to explain. I feel ****** by the bank.