IBM Entry Level Software Engineer interview questions

I applied online and received an email to complete a coding challenge online about a week or two later. The email stated that I would have 5 business days to complete the challenge, and the questions in the coding challenge would be general in nature and that studying would not be necessary. I figured since this was an entry level position, I should just review data structures and algorithms; however, there was one question that required a verbal answer that I would have needed more background on the topic in order to be able to answer it better. The email and original job post did not indicate this.

The process takes about two weeks. Got contacted first by a recruiter with some preliminary questions. Then she set me up for two video chat interview, one behavioral and one technical. I think I did a decent job on those, and they said they were going to get back to me when the decision is made, but they never did. Tried to contact the recruiter but didn't get a response either. I mean its fine if they wouldn't give me the job, but at least let me know. Very unprofessional.