Card divisions and bad response

I have 6 accounts with Nedbank. Yesterday they debited money out of my account for no reason and I asked why and couldn't give me a reason! Who gives them the right to actually take money for no reason! Secondly I have been paying for sms notifications on my credit cards and nothing comes through! I'm paying for a service that I do not receive and I have phoned for hours and no response and just been put on hold! It's actually a disgrace and when you go into the branches they are so confused and actually have no clue what is going on! It's actually a disgrace how Nedbank can be run in such an unprofessional manner