Spelling Errors: Stupid? Lazy? Or A-OK?

[Betty]

So I'm going through a drive through yesterday for lunch and their sign in the window read:

We will close early on December 24th at 6pm.
We will be close on December 25th.
We will also be close early on December 31st.
We will be open at 7am on January 1st.

I asked them how close they would be on the 25th and got a blank stare. I pointed out their sign said they would be close - or was that a typo?

The girl said "what's a typo?".

I sighed and replied nevermind.

I know there's not a very high caliber of intelligence required to work at a fast food place but come on now. I guess they were, at least, consistant.