Cream Group (UK) interview questions

The interview process was great until it took a bad turn. I completed a full design assignment, they said it was great. When I got invited back for a final interview, they spoke great things about me and said I would hear back in about three days. I got completely ghosted, and all my emails went unanswered as well as my calls. I only got through to them via a phone call from my partner's phone as I believe they were ignoring calls from my personal phone. They sounded very stressed that I was asking for answers, and basically told me the position didn't exist anymore and to look elsewhere. Also, they said they would send out an email explaining the situation, which never happened. So, if you want to waste your time with interviews and assessments to not even get a rejection letter, by all means, go ahead and apply. This company exhibited such little professionalism that it was hard to believe.