Arganto interview questions

i want to preface with this: very disappointing and very unprofessional rejection. I can understand and accept rejection ( it's the game after all ) but after making me loose two hours and make me sit through 4 interviews, and meet the entire company ( like 4 people) it's unaccepetable to behave like that. this being said : I applied via Job teaser. I was contacted via email for an intial interview. it was an hour long with two of their analysts. typical questions about motivation, interests, my abilities etc. I was contacted for a second round with 2 interviews. one with a third analyst, that was extremely similar to the 2 previous ones. Final one with the CEO , who had me solve ridles and math problems. They then told me to expect result in a week. a week later they told me to wait another week and then promptly goshted me.