MiraDx interview questions

It was a three step approach. I liked how fast and streamlined it was. First was the HR screen. Easy. Second was the technical skills. I was given a takehome and the next call was showcasing it and talking shop about other tech stuff. Last call was with the creative director. Here's the thing, I don't mind rejection. But when I was told I failed the "culture" interview, I was emailed by the HR/Engineer interviewer (same person for first two) that "If there’s any way I can help, please feel free to reach out!" Guess what happened? I asked for genuine feedback and was promptly ignored. I gave them weeks and a follow-up and still nothing. If this is how they treat prospective candidates, I'd hate to see how they'd treat people who owe them work for money.