Tripadvisor Software Engineer I interview questions

Got a Codility test invite from TripAdvisor, which consisted of 4 questions with 48h time to solve them. After the test, there was a screening interview by a recruiter where she said we're moving forward to the next round and asked me about my profile and interests. The recruiter said that I would have the next round shortly and the hiring manager will contact me soon regarding it. After a few days, I received an auto-generated email from HR stating that I have been rejected. Upon following up with the recruiter about this, she claimed that the email was sent by mistake and they're still working on setting up the interview. After a few days again when asking for updates, the recruiter said I have been rejected due to some other reasons. The entire interview process looked like a joke and was a complete waste of time.