A Confusing Conversation

A phone call...

customer: Do you carry [name of a specific type of product]? And if so, how much are they?

me: I'm sorry, we don't.

customer: Huh. Usually S&B does.

me [confused]: Who or what is S&B?

customer: A company that makes [that product].

me: We don't carry that brand.



"S&B usually does"?? I still haven't figured out why she said that.