Next Door (CA) interview questions

They scheduled an interview with me at a specific time on a specific date, and then when I showed up for the interview they told me that they wouldn't be able to interview me that day because they were busy. I had to drive 45 minutes to get there and I showed up 10 minutes before the interview started. Canceling the interview once I had already arrived was extremely unprofessional and inconsiderate of my time.