Ericsson Data Science interview questions

First round was an online test with a few programming, ML and SQL questions. It is followed by onsite interview. Questions were asked on projects done and basic ML concepts. It was a good interview session. But, the worst part about the process is that HR doesn't share the feedback even after a month. They don't even reply to your mails. Having taken a day out from my work, I would expect a feedback. Even if it is a NO, it is fine. Why make people wait for long? It is very unprofessional.