I'm sorry it was such a let down. I would have a lot of the same reactions (except for the concerns about the cane, unless he was trying to play it up, which would piss me off). The part about not being perfect would bug me the most because it's not only defensive, it's kind of attacking at the same time, like you were being unreasonable. It's not a lot to ask someone to remember your name, which can be done while also using a cane.

At the same time, it's early and maybe he can shape up into someone who's helpful to you.