It was never a problem for me on the Post Office counter as mobiles were still quite rare then. But My brother would just sit there and say: "that's ok, go ahead and make your call, I'll wait until you've finished". As he worked in a very busy office and lots of other customers were waiting, it was usually very successful. But I have to say I agree with the cashier on this one.
Look, you've got it all wrong! You don't NEED to follow ME, You don't NEED to follow ANYBODY! You've got to think for your selves! You're ALL individuals!
Yes! We're all individuals!