SJ Digital Media Solutions interview questions

Should have read all the glassdoor reviews before I applied... Got called down to the office for an interview. Travelled all the way down there, to some industrial building for the interview and was even 15 mins early. Also prepped my portfolio specifically for this and everything Then after waiting, a very nice employee (who looked very confused herself) told me that the interviewer couldnt make it? Firstly, isn't it basic courtesy to inform at least the day of, if you can't make it? At least call me or text me even an hour before or something. Secondly, I didnt receive any apology from HR or anything. NOTHING. Dead silent. I've been to some horrible interviews where the interviewer was rude or slightly late but this is a first for me. Super unprofessional, the employee asked if I wanted to reschedule and I just said no. Please steer clear