FNB Private Wealth Call Centre Phone lines not working

I called FNB Private Wealth Call Centre to request certain statements. The gentleman could not hear me. When he called back, he said he had load shedding and I would be handed to another agent. The agent didn’t answer the phone. It is absolutely shocking that a major bank in its private wealth department has such inefficiencies. When I called back, the line went to a voicemail box. When I called again, I was not helped . FNB is just inept