Resolution Digital interview questions

I got the interview invitation and waited for 30 minutes the interview day. However,. no one showed up on it and asked the hiring specialist of OMG group what was happening. They said the manager who was supposed to speak to me got sick. It usually happened, however, when I contacted my next availabilities, they said they had already found the candidate, without interviewing me.

I had 3 rounds of interview to join the paid media team. The first round was to get acquainted with the HR which went well. The next round was with 2 directors who asked about my experience which also went well and set up for the third round involving an assignment. I ensured to be as detailed with it based on the brief and they said it was more than what they expected. I assumed it was a good thing given my experience and skills were well above their requirements for the role. I had experience for a director role but they were of the opinion that a manager would be better suited to which I was also open. Even then they could not offer me the job and only said that another candidate with more experience on a similar client was chosen. They also said all the other roles were not available. This seemed a bit strange considering they were actively looking out for many managers.