Union Realtime interview questions

The interviewer was very rude and abrasive. They seemed to lack knowledge on how to recruit software engineers. When I asked about the interview process and a potential code challenge they didn't know what it responded with a condescending "its an interview". They also accused me of being on the wrong company website even though I retrieved that link from their LinkedIn profile. Overall the interviewer was unprepared and unprofessional. I am no longer interested in working with this company.