Dolphin Technology Digital Design Engineer interview questions

I submitted application and got on-site interview directly, then they arranged my interview on one afternoon, but they don't cover the travel expense, so I booked the flight by myself. One day before the interview, they emailed me and informed me the position is taken, so my interview is canceled, although I already arrived at San Jose at that time for interview. They don't care my cost on flight ticket at all so that I lost $500, two days and an interview opportunity. I don't what to say about it, if you decide to choose one candidate among applicants, you should at least interview all the applicants that got interview opportunity. It concerns with the reputation of the company!