Eyeball interview questions

Applied online. Was then invited to an in person interview at their office. Textbook interview questions with someone in C level. Friendly enough, but gave an impression that management might be a tad immature. This was sort of cemented after I was told they'd get back to me by the end of the week, and was then promptly ghosted (with even a follow up email several weeks later being ignored). Might be a great company to work for, but their hiring process could do with some beefing up.