Enterprise Incubator Foundation interview questions

Before the interview they wrote a letter, asking for my portfolio, after I submitted my portfolio, they appointed an online interview via Zoom. There were about 4-5 people interviewing me and mainly one of them was asking questions. Overall the interview was ok and to the point. In the end, I asked when I would receive back, and they answered in two weeks in either case. Instead of replying after 2 weeks, they kept me ghosting and never replied back sending a rejection letter. I find this behaviour very unprofessional and disrespectful. I spent time writing a Cover Letter, polished my CV, prepared the portfolio, wasted my time and never received any feedback and that is why I am leaving this feedback.