Somewhat related... At our company we once deleted a G Suite account that had a balance on its AdSense account. They let us delete the account with a click of a button without checking if all the associated accounts for other Google products should actually be deleted. So we received a letter that the account was sent to collections, but there was no way to login and pay the bill because the account didn't exist anym…
I deleted my Yahoo (email) account, but they didn't delete the Yahoo Groups account tied to that account.
I couldn't access Yahoo Groups, but I was still receiving Yahoo Groups messages on all groups I'd set it to forward posts to my email or notify me of things. No way to unsubscribe or change settings.