4 rounds, one of the most difficult interviews despite it being a marketing position. the interviewers were direct but asked mathematical questions on the spot to understand your thought process - felt a bit cut throat

I made it to the final round interview, which was to present a case from some take home data (fairly standard). However, before that presentation, they requested that I come in and meet the CEO, which I did, and I thought the meeting went ok. It seems like the CEO rejected me from that meeting but HR did not send me a formal rejection email, so I prepped for the presentation and joined the meeting but no one else was on the call. It was only then that I found out that my application was already declined. The HR representative was nice and did offer to send me their standard stipend for the assessment, but I never received it even after I followed up.