Rooter Frontend Developer interview questions

I'm really upset about my recent interview experience with Rooter. I went through five rounds, including Technical 1, Technical 2, Engineering Manager, Co-founder, and three in-person rounds. I was excited to have cleared them all, but now it feels like they've disappeared! They're not picking up calls or responding to messages. It's incredibly annoying and feels like a complete waste of my time. I just wish they'd have the courtesy to at least let me know if I'm in or out.