"Rude staff"

I arrived at the Urgent Care Centre and unfortunately they were full for the evening but the sign said you could speak to the nurse about alternative treatment options. I approached the receptionist to ask about this who immediately cut me off and directed me to a staff member speaking to some people. I waited for my turn and then when I tried to speak to the nurse she was incredible rude, dismissive and patronising. I tried to ask her for treatment tips and that someone aggravated her. At one point she went "I'm not being sarcastic but" as I pleaded with her to help me figure out how, when and where I could be seen by a doctor. I left in tears. One of the worst medical interactions I've ever had.