More recently I forgot to check the front before opening. I realised when the contents were about a mortgage account, I don't like debt so I certainly wouldn't have a mortgage.
Apparently the previous owner still has a mortgage on this place, which would worry me if not for the fact I have monitoring set up so I know the Land Registry says it's mine, which means even if the idiot bank thinks they've got security for a loan they are wrong and the government will cheerfully tell a court of law that if asked. Hopefully they just didn't update the name of the mortgage and actually security is now in the form of some other property bought with the proceeds of the sale to me, but who knows, these idiots didn't understand "Not at this address" for five years.
I decided to call the bank about this mistakenly opened letter, but because of COVID they weren't usefully taking calls. I could remain in a queue for fifteen minutes and then get automatically dumped out with "We're sorry" if I wanted. So I just chucked the letter in the recycling.
If you need a recommendation for a Bank never to do business with in the UK (certainly not to trust with regards to where their customers live) it would be Halifax.
The inverse happens too! Sallie Mae regularly snail mails me to tell me that the (snail mail) address they have on file for me — the same one they send this notice to — is undeliverable! I get all the normal mail (like account statements), too…