The one that kills me is when a financial institution or healthcare facility calls and says, "Hi, this is so-and-so from The Place. I was calling about your request/account/etc"

→ "Oh, ok"

→ "Before we get started, I need to verify your social security number/address/other personal information"

→ "Yeah, you called me and I have no way of knowing if you are who you say you are. I'm not going to give you that information. Can you give me your name, and I'll call the number on the website and ask for you?"

→ "Flabbergasted Well, our system doesn't work like that, so you'll have to submit another request"

→ Repeat ¯\_(ツ)_/¯