I did, and it was surprisingly easy tbh, multiple work and personal accounts with different banks. Some were even able to block apple pay and any transactions made that specific phone/app.
if you have left it locked via apple then there's nothing they can do with it other than strip it for parts tbh. you might get bombarded with messages trying to get you to remove the lock, just ignore them / block them
Good work. You were ahead of the game.
I've seen a couple of things recently about phone theft. Phone gets stolen and wrapped in tin foil to 'hide' it and at some stage the fraud starts. It's a nightmare for the owner.
May be worthwhile contacting your banks. Best of luck with that