Alliants IOS Developer interview questions

I was referred to the job by a recruiter who said they were very interested in hiring and would like to interview me at their office in Southampton. I arrived to the interview to be informed that they lied and did not actually want to hire me and just wanted to have a chat so they could add me to a list of potential talent, which was pretty annoying considering I took holiday to fit their schedule, seems pretty unprofessional to lie to get candidates through the doors just to let them down. They’ve been advertising for positions for a long time now so just assume it’s not going to be a real opening.