PRIDE Global Program Manager interview questions

Was reached out by an HR rep to schedule a phone interview. Day of the interview, the person rescheduled last minute (after the scheduled time of the call) to later in the week. After providing additional times to accommodate for their schedule, they provided no response. I had to follow up again which led them to say they were cancelling the interview altogether and going in another direction. I found this highly unprofessional from a company specializing in recruiting and HR.