Adobe Executive Assistant interview questions

I was sat waiting for my interview, 10 mins later there was no show. I emailed her and she said she didn't have it in her diary even though it was via a scheduling system. She said to reschedule the next day or Monday, I emailed her 3 times, immediately to respond to her message, the next day and Monday and was ignored. Unbelievably unprofessional and have no desire to work for this company if this is the culture.