Affordable Pet Hospital interview questions

Before the interview, the doctor gave me a set of instructions to follow before I arrived which was," Call once you arrive, and if we do not answer please knock on the door." When I arrived I followed the directions but when I knocked the person who opened the door rudely pointed to the sign to call again with an attitude. Which I responded to her, "I did call and nobody answered and the doctor told me to knock." She replied," yes, I'm the doctor and I'm telling you to go back to your car and call again. I said okay, and she goes to say if there's a problem with me doing this. Overall our interaction was not very professional she was so rude and not friendly.