Full Circle Group interview questions

I went through 5 interviews and they were very disorganized. They all ask me the same questions, all of which were very generic and relating to the role. It was 1 phone interview and then 4 zoom interviews with various people at different levels of the company. After I spent several hours doing these interviews and several hours researching the company they followed up with a generic rejection letter. They didn't even respond to my personalized emails I followed up with thanking them for there time. It was a huge waste of time and I feel like I dodged a bullet, if they cant take 5 minutes to call me they didnt value me as an applicant.