Carbon Software Engineer interview questions

I received an HR screen where I was asked about my background and why I wanted to work for Carbon. I was told they would get back to me within a day to let me know whether or not we would proceed with the interview process, but I was ghosted despite following up with them. It seems like "ghosting" is a habit with this company as I have read other reviews suggesting similar experiences. This isn't a dating app - so I expected to be treated like a human being - especially when I'm dedicating time and energy into preparing to interview with your company.