LinkedIn Campaign Manager interview questions

Reached out to them the second the recruiter sent me the invitation email to interview with them but didn't hear a response back for almost 2-weeks. Scheduled a call interview with them to which they were an hour late to and then admitted he didn't read my resume. Following this I was told it would take a week for them to escalate my resume to a senior level recruiter, no response for almost a month. Another phone interview, again the recruiter said he didn't even have my resume or read it, and this time I was told I was still too young in the industry but they would pass on my resume and to expect a response in a week. Another month, no responses from anyone even as I emailed/called everyone for news. Finally had a time set to have a THIRD phone interview with a member of their Ad Ops team. The man was late by 30-minutes, yawned continuously throughout the interview, starting to talk to someone as I was speaking then said "Oops, I thought this was on mute" and then once the interview was nearly over he just said "Okay we're all finished, bye!" and hung up without telling me anything. At that point I thought the interview was over, the emails I sent were never responded to and I assumed I didn't get the job and moved on with my other interviews. Two-weeks passed and finally I got a email saying they'd like to bring me on site for a 2-hour face to face interview. I responded saying that I had already taken a job with another company who did not drag me through THREE MONTHS OF PHONE INTERVIEWS to just get a face to face meeting with someone and I had given on them.

I applied for a job as a campaign manager and after a week received an email from the hiring manager to have a phone interview. So I had the phone interview of 20-25mins in which I was asked general questions about myself, education, work experience , future plans and then about LinkedIn. After that, I went on holidays so once I came back I got the email again to have another phone interview from someone in the US office. So I gave that interview which was an hour long and more detailed but mostly work related questions and my education. After that interview, I was sent an online test of 2 hours. I did that test and then I had a phone interview with the recruiter regarding salary etc. Please note, all these steps I was never given any feedback at any stage. After the test I was contacted to come in for a face to face to interview with the dept head and then I was send two case studies and asked to prepare two separate presentations which I'll have to present on the day. Hence, the onsite interview was of half an hour and then an hour long presentation which was taken by 3 people. One was actually present in the office and two were from Dublin and US office on webinar. After that interview, within 24hours I received a call from recruiter to have a phone interview with the senior manager in US. Hence, I gave that interview. In all these times I was never given any feedback and reaching so far I assumed I am doing good and will most likely get an offer but to my utter disappointment after 2 days of phone interview I have been told that I have a bad news and they cannot go further with the process. The reason was that they need a more experienced person for this job. I thoroughly enjoyed the whole process and it has been very lengthy process for me but at the last time you are mentioning to someone you need a more senior person was kind of unfair. Did they not see my CV and my experience? I am a bit disappointed as I worked very hard for it and presented myself really well and this was the comment I got from the recruiter. I wish I could do better than that. But I enjoyed the whole process and learned alot.