Core Project Manager interview questions

Applied online through Indeed advert, was called for interview about 3 weeks later in August , attended office and spent an hour chatting to 2 interviewers, 1 who was the hiring manager. Felt the session had gone very well and that I could add a lot to the company. received no feedback so chased for an update 2 weeks later, and again two weeks after that, and again a third time. HR manager finally replied saying they were out sick but would get back to me on the Thursday, never heard from her again. Thought the lack of response and feedback was very unprofessional.