[smcin]

In the US Caller ID has been so hopelessly compromised (for almost two decades now, that's on Congress) that financial institutions almost never make outbound calls, and only ever use standardized published numbers; I wasn't aware other countries differ so much.

Please tell us more context with regard to your UK banks making multiple unannounced calls demanding your ID ... were you an individual customer? finance director? MD? or what? Why on earth do they do that? Have you told them in writing not to? There must be more backstory to that.

[DamonHD]

Banking example: trying to move some savings from one UK bank to another - back to where the money had originally come from, and that had just purchased the first bank too. It took 8h on the phone over a week or so to get the money back, which was interspersed with a comedic number of calls from withheld numbers and people unknown to me demanding enough info to get access to my money. And other very poor practice. The bank even conceeded at least once in writing that it knew that it was screwing up and sent me £100 by way of apology - but carried right on screwing up.

Non-banking: getting a call out of the blue from my Internet Service Provider again demanding enough credentials to get access to my (business) account, and unable to understand why that was very poor practice. I used to like that ISP a lot, and have been with it for a looooooong time, but the angry exchange with who seems to have been my account manager has soured the relationship a lot.

[DamonHD]

Happy note: just had a sensible interaction with my bank where it called me back but the caller understood why NOT to ask data that could be used to access my account, and we managed to resolve the issue that I was having (which, I think, was my error)!

[somewhatgoated]

My bank(s) have never called me and if they did I wouldn’t pick up - it’s definitely not a standard in the EU.

[vladvasiliu]

My bank (big green French one) pretty much always calls me whenever I do some unusual money transfer, even between my company and my personal accounts (they're both with the same bank), even though the transfers are authenticated either via the app or by an SMS code. However, the people calling me don't ask any details, just "is this vladvasiliu? Is it actually you who initiated this transfer, for x amount on y date?".