Block Application Engineer interview questions

7 rounds of total interviews. 4 Technical and 3 non-technical. I passed all the interviews and the recruiter said I did pretty well (From their internal ratings got 4/5 stars). I had multiple calls with recruiters throughout the process. But after the last HR round recruiter ghosted me. Followed up on email like 5 times, called once but no reply at all. Not even a rejection email. Such unprofessionalism and waist of time.