Unprofessional behaviour

Yesterday I attended an interview at Access Medical in Verulam. When we got there there was this one guy who was also waiting to be interviewed. We were given a room to wait and the guy was called immediately. He was inside the interview room for more than 45 minutes and I started to be suspicious. While he was being interviewed we were joined by 2 more candidates and we were 4 in the waiting room. When the guy finally came out the lady (Wendy) who was taking candidates to the room congratulated him and it was clear to us that he has got the job before we could even go inside for our interviews. The lady called the second candidate but she was done in less than 10 minutes. I was called next and I was not pleased with the person conducting the interview, he was so unprofessional. He didn't even introduce himself. He asked for my CV but you could see that he was just paging with no interest.He even asked for my address but it was there in front of him and pretended like he was typing it on the computer,for wat???? I'm so disappointed, why do they call people to come to interviews when they know they have a person for the job. I want them to pay for my transport.