FNB Poor Service Level

I have tried for over 2 days to change an address on an account. I went to the branch and received a ticket saying 5 min wait. After 1 hr I saw a representative. Told by the Manager my request would be addressed in 24 Hrs. As of 48 hrs later no change. I have spent almost 3 hrs on the phone over 2 days to various call agents who transferred me around their organisation and on several occasions ended up on menus that had no selection available. I asked to speak to the Bank Manager at the branch but told they do not take calls. I asked them to send a message for the Manager to call me. Cant do that either. I asked for their direct Head Office number. They don't have it and gave me their call line that I had just called. I asked for details of their CIO and they had no idea what or who it was. I said how about the CEO or COO. Guess what, they don't have their numbers. The one thing it did assist me in was my decision not to bank with FNB. !!