Okta Senior Software Engineer interview questions

A recruiter contacted me on LinkedIn. I decided to respond since Okta was doing interesting stuff. I provided my contact details to the recruiter. He then scheduled an interview at a random time without asking me first. After I clarified my availability, he then scheduled a call for a week later. Never received a call at the time I was supposed to. I waited and waited and then sent him an email. He did not respond to mails after that. Such a bad experience. Why contact me if they weren't interested to take the conversation further? Someone else seem to have faced the same issue. Possibly the same recruiter.