LogRhythm Anonymous interview questions

I had a phone screening which went extremely well, and the recruiter said that I would be perfect for the role. She told me she'd follow up in two days. Over a week later I received an email saying they even though I had an extremely strong resume, they weren't moving forward at this time. I was extremely surprised at this completely random rejection, and rather annoyed at their complete unprofessionalism in not getting back to me when they said they would.