After 36 years and being worth (according to FNB) R1, 3mil I want to close my accounts

I have phoned FNB on numerous occasions. Where I ask them to phone me, where I asked them to change a debit order details. I have asked for them to change my fnb life policies of 11 years over to my check account because I was about to close my bond account, now that my bond account has been closed. I get messages saying the debit didn't go Through they will double debit me. I when to the banked phoned them they say it is 100% up to date. So I said their is 2 and she first didn't even know about it, then sayimg it is at their insurance department, and put me through. Then that department can't even pick it up and put the phone down in my ear infront off the Primrose branch manager. Then I phone again for them to tell me that they can't find the policy again and say they will call me back on the 8th, which has not happened yet. And much more.