Allocadia Software Customer Success Manager (CSM) interview questions

I never even got to interview. The HR reached out to me to schedule an interview. I provided her with my available times and 2 days later she replied saying she will call on a particular day and send a calendar invite. She never mentioned the time she will call, just the day. I replied asking for the calendar invite and she never sent anything. This is highly unprofessional and speaks to the culture at the company