Nedbank service sux.

It has been a while now that I have had problem upon problem with Nedbank South Africa. From bank account going from a positive balance to minus R3500.00 over night and they can’t tell me why to internet banking being offline when I need to use it. And not once, not a single one time have they gotten back to me with an answer or explanation or fix for it. The latest thing now is that my Nedbank money app that I use to buy electricity has now stoped working and after days of making phone calls and being placed on hold for 20 min at a time adding up to about a 100 bucks of airtime give or take, they still didn’t fix the problem and I still can’t buy electricity. So as far as I am concerned Nedbank can close their doors. How can anyone trust them with their money?