I was probably the Dutch ING or ABN-AMRO, we went through too many banks and between two countries :D.
The Dutch ING now has a new thing where you can verify in the banking app if it's them calling you:
https://www.ing.nl/de-ing/veilig-bankieren/wat-kan-je-zelf-d...
(I guess in some sense it's a step back because the bank is calling you again, but it's nice that you can verify it live in the app.)
