Workplace Injury Commission interview questions

I was received a text message and call to arrange an interview and explained they were looking at interviewing the next day on Thursday. As it was short notice I asked if it was possible to interview on Friday or Monday. The talent partner said it was important to them to be flexible with candidates and would confirm asap. They were then unresponsive to my calls, messages and emails. The following week they replied and said the positions were filled and asked if I wanted them to keep my details in case one of the successful candidates didn’t work out. Unprofessional and waste of time. Indication of how they operate.