Chevron's Last Sale (To Me)

Two days ago at the Chevron Station in Ventura, CA (on Google Maps):

I tried to use my credit card at the pump, but it did not recognize my zip code. So I walked into the store to talk to the clerk, a 20-something young man.

Me: I would like to fill up on Pump Five.
Clerk: I need a dollar amount.
Me: Whatever amount it takes to fill up my van.
Clerk: I still need an actual dollar amount.
Me: Can you give me change if I don't use it all?
Clerk: I don't really know how to do that.
Me: Never mind, just give me one hundred dollars worth on Five.
Clerk: What grade of gas do you want?
Me: Eighty-seven octane.
Clerk: Is that "Plus"?
Me: I don't know what you call it; it's the lowest grade you have.
Clerk: Oh, that's called "Unleaded."

He rang me up. I entered my PIN and walked out without another word.

Can it be that a Chevron gas station attendant:

1. Does not know the octane level and the name of the product he sells?


2. Can not complete the most common transaction (a fill-up) ever known at a gas station?

Oh, it be.