Not a pleasant experience is it!
When you think that over a lifetime, on a modest average income, you're using them to look after - say - about a million quid - give or take several thousand, and let them use it all to make their own investments, mistakes etc., it's a bit of an eye-opener when just a few clicks on a keyboard is now the expected way to do what normal business people used to do, which was discuss the issues formally, friendly and firmly!
I remember my bank manager in Rye actually writing a short letter to me when I first had an account in the mid sixties, and informing me that I was £3.10s.6d overdrawn, and that was unacceptable! (I grew to like and trust him immensely later on, and he was a great friend when I needed a few quid to get married! The other bank staff liked him and respected their clients too)!
These online accounts are actually seen as OK here, as I love mucking about with Excel, but that's because I can easily be a nerd on several occasions (!), but the methods of just clicking all your assets away to a new bunch in a flash, can be a nightmare and you're right to put up a huge moan about it all!