Wheebox interview questions

I was contacted by a recruiter and given an assessment, which I completed the next day. They then scheduled an interview for the following day. I confirmed twice—once two hours before and again when they called. However, I missed a call 20 minutes prior to the interview. Without confirming anything further, they canceled the interview and sent a rude message saying, 'You don't have the dare to attend the interview and wasted our time. It shows Unprofessional language, poor communication, Lack of candidate respect, Red Flag