Where do I start

Where do I start.....Last month my account was frozen for 24 hours at month end due to a technical issue!.....no apology......no advice. Today.....month end again - I cannot log in..... a ridiculous message pops up something like... "Oops sorry there is a problem from our side"....no explanation, no idea when it will be sorted. I just have to keep trying. The bank feed to Sage does not work....in desperation, I am now doing it manually......FNB works beautifully. It is just getting more and more difficult to bank with Nedbank. They don't care to advise their customers if they need to bring the system down....it is just brought down. I feel sorry for the staff, they are unable to answer questions thrown at them by irate customers. JUST COMMUNICATE!! APOLOGISE!! SORT YOUR SYSTEMS OUT!!