"A&E receptionists"

I was referred to A&E by my GP with a kidney stone. The receptionist was extremely rude, I gave her the paperwork I was given by my GP, she then questioned why I was there! and said my GP shouldn't have sent me there! It makes me laugh that the "receptionist" seemed to have self promoted herself to a doctor! After she discussed this further, she then made it quite clear that there would be along wait. If I hadn't have been feeling so poorly, I would have walked out. Who did she think she is. There is a way in which you speak to people and she certainly didn't know how too.