I was contacted on LinkedIn regarding a wide range of opportunities with very high salaries. I said sure why not, even though I was not actually actively looking for a job. The recruiter asked me to book some time on the calendar, which I did. Few days later come the phone interview time, just 10min before the interview, the recruiter sent an email asking to reschedule. I said sure, and I gave some availability, recruiter agreed on one. Few minutes later, I got another email saying it is not possible to meet at the agreed time, please chose another, which I did. We agreed upon the day and time only for the recruiter to simply not show up. I did not get an apology or an explanation of what has happened. Simply got ignored and ghosted. Very professional.