ApplyBoard Software Engineer - Full Stack interview questions

I applied online and received request for Phone interview with HR. Further, I received an online coding test on HackerRank. Then, there was an in-person interview. After spending several hours, to travel to the office (Kitchener) for an in-person interview, I asked about the interviewer on reception. There was lot of hustling and bustling in the office to find the interviewer as the HR was on leave that day. Finally after waiting for an hour and a half, after the scheduled interview timings, interview began. The interviewer told me that he had no idea that there was an interview, as the HR hasn't informed him about it. The interviewer seemed not much interested in conducting the interview and was obviously not prepared for it. Some random questions on past experience and mathematical puzzles. It was a hectic day. After waiting for a few days for the interview results, there was no email or call. Finally, I emailed the HR to ask about my status and never got any reply. After spending so much time preparing for interviews, completing coding tests, and travelling to the office, I was completely ghosted.