LANgineers interview questions

Employer was completely unprofessional, and got upset when I asked about salary and benefits, then began making things up. The second "interview" was a 3 hour video chat that wasn't scheduled, and I didn't have any idea of the purpose of, and still don't. I brought pay up during the third call, and the employer basically lost their minds, coming up with a ton of issues. Red flag. I don't appreciate my time being wasted, and if a company will do it during the hiring process, you can bet they'll do it when you work for them.