Worst experience updating my details

Been with these guys for almost a couple of years now on an investment account. Its been okay as I have never really needed to contact them. I have since moved into a new residence and need them to update my physical address. It is just been a back and forth and they still cant change my address. At first they needed it to be in my name which I explained I dont own the place, then they wanted more things, i have sent them a lease agreement and a tax certificate from the trust as the house is owned by a trust and thats still not enough. This is literally the only place where I have struggled to change my physical address, they’d rather keep my profile with a physical address thats no longer kine. That makes sense to them. In-fact this whole experience has turned me off banking with them. The idea was that it would be convenient to bank digitally and never have to go to a branch, but instead it was such a swift process to update my physical address at FNB than it is with them. Yet we’re supposed to believe they’re the prestigious lot. Foh!!!