Eze Software CSM interview questions

The HR Recruiter reached out to me for my availability to speak with the hiring manager. I provided her with 4-5 days I was available. This did not work for the hiring manager and they got back to me three days later and asked me for more times, which I provided. I did not hear back from them and then two days later received a standard rejection notice saying I was not moving forward in the process. I emailed the HR recruiter asking if it was a mistake and she never responded. It was perhaps the most unprofessional experience I have ever encountered, and I am probably lucky to not have wasted anymore time with these people.