Adobe interview questions

Had 3 rounds of interviews that I was able to clear successfully. For the next round just before the interview, I receive a phone call from the HR saying that the interviewer is unavailable and we will reschedule for next week. Post that I never received any communication from their team - even though I followed up couple of times. Even today, their talent portal shows me as an active interviewee for the role. The entire experience was very unprofessional and disappointing.