Tribe Dynamics interview questions

Simple zoom interview that was relatively straight forward and positive. The interviewer seemed quite professional and was very positive in their reactions and even began walking me through the next stage of the process (talking as if I will get to the next stage etc.) However, upon completion of the interview they never got back to me about the position, despite saying they would. They didn't even have the decency to send a polite rejection email, even after I sent a follow up email. I find this very rude and unprofessional.