Amkor interview questions

After an online interview with HR, they scheduled an in-person interview with the managers, and when I arrived on the scheduled date, I found out that a different date had been scheduled with the managers. Another date was scheduled for this interview, and after that I was told that I would have feedback in 2 weeks, and if not, I would be welcome to call to ask about the status. Two weeks passed and I called, they told me they hadn't got the time to process the interview process and that I should call again. I called again and heard the same thing. I never got the feedback I had been promised, so all I can say is that the HR Talent Acquisition Team is not really delivering.