mismanagement and inconsideration

Got invited by Suzan to a forex controller interview only to get there n be sat in the kitchen she then tells me I do not qualify and they already have someone. My question is how do u invite a person to an interview if you already have someone else and if they do not qualify?why waste my time and get my hopes high for nothing? I sat in traffic for nothing she didn't evensit me in a boardroom all this was done in the kitchen iI wonder if such a reputable company does not have boardrooms for interviews I found wat she did inconsiderate and in professional .A spit on my face was when she told me a favor she could do for me was to take my CV to another recruitment agency