HD Buttercup interview questions

The person due to interview me forgot we had a meeting scheduled. I had to email the company to make sure there wasn't a mistake. They then made me wait several hours for a rescheduled interview, so my whole day was spent waiting to meet. Finally, during the interview, I was talked down to and made to feel like I was wasting their time because they did not plan ahead and carve out the time to meet with me in the first place. Forgetting about an interview would cost an applicant a job - this is a standard that needs to apply to employers, too. I've read the reviews about the toxic workplace and culture, and I was willing to give this interviewer a try - but if toxicity blatantly spills through a single initial interview to this degree, that's one too many red flags.