FNB Private Clients a joke!

I don't know why I bother paying for FNB Private Clients. Clearly no one there can help me. I have been on the phone for hours and everyone just tells me sorry, can't help.

I am applying for a UK visa and need to show proof of funds. Most of my money is available in my FNB flexi homeloan account. FNB refuses to provide me with a document that shows the available amount on the account, even though I can see it if I go to Detailed Balance on your portal. Statements are not good enough, they do not show the available amount.

Your Private Bankers keep on suggesting that I just transfer the money to my cheque account. Seriously? How do I show the source of that money? How do I show that it's not a further loan but actually my money?

FNB keeps telling me they don't have a template. I ask them to write a letter. They tell me no template. Really? Write me a custom letter then. Why is this so hard?

Can someone that has the authority to write me a custom letter please contact me? Please don't just redirect me to your "private bankers". I already know that they can only fill in templates. I need better than this.