Sanofi Collection Analyst interview questions

I recently had a face to face interview with Sanofi, following a call from the sourcer and also, email from HR. I was told by the hiring manager that I’d receive feedback within a week. Despite following up multiple times i was completely ghosted. No response from anyone. It would be understandable if i wasn’t selected, but the lack of communication is unprofessional and disrespectful of the time that was invested. Candidates deserve basic courtesy.