My bf (an account holder) called in ahead of time and asked if I (a non account holder) could get a cashiers check and pay the 10$ fee so we could get our rent paid for the month). The phone representative at this location said yes. Upon walking into the bank with little to no other customers ahead or behind me, and asking if I could get one, a male rep tells me no. I even quoted my boyfriends conversation and said that he was told only moments ago I could get one.
He says, "It is at the banks discretion."
So basically... if they feel like being rude that day, or if they don't like you for whatever reason, they can tell you no, regardless of a confirmation earlier.