Envato Junior Software Developer interview questions

I received an email from Envato for the Junior Software Developer position they advertised on Linkedin. I scheduled the meeting and was ready for the interview, but two minutes ago I received a TEXT MESSAGE that said the HR person was busy for the day and please reschedule it again. After I rescheduled it again, half an hour ago before the interview, I received a phone call from HR he said the hiring process is on hold at the moment and he will call me back once he is 100% sure that they hire. Such an unprofessional process, I got a day off to be ready for the interview and they canceled it twice just before the meeting.