Payscout interview questions

The interview process started off smoothly and progressed at a reasonable rate (1 interview per week as I moved onto further rounds). I was scheduled for a 4th interview and they cancelled it within an hour of when it was supposed to happen. Now, I understand that things come up (and they did apologize), but they never rescheduled the interview after that. I reached out after a week of hearing nothing, just for them to say they were still waiting on some things to reschedule. I never heard from them again! Overall, I am disappointed because the team members I did meet with seemed nice, but this lack of communication and respect (I had invested a month of time into interviewing with them) is unacceptable. I hope others have better luck than I do, and I'm glad I found something else after wasting my time with them.