Terrible customer service

I have a problem with FNB, I could not answer their call earlier today, as I was attend to meetings. But when I call back, I hold on for 15 min and the consultant was not clear on the other side, put me on hold for another 5 minutes. And then I was cut off. This is really terrible service from FNB, as I request them to phone me back after 3 and nothing happen. Poor service.