Horrible service!

I have been trying to use Secure Chat on the FNB app to enquire about my account. Each time I am connected to a banker (after a long wait) they message me, I respond immediately, but the chat gets disconnected 2 minutes later due to no response. It has happened to me twice today already. Additionally, the reason why I want to chat to someone is that I have had accounts for 6 years with FNB but for some reason when I transfer money between my own accounts, the money is still held from my available balance for over 2 days, even if it is a small amount. I would expect by now that after all these years I can have access to my own money immediately when I need it, but that doesn't seem to be the case. Just absolutely horrible service all around.