Dentsu Content Editor interview questions

I went for an interview, taking a day's holiday from my current job to get there, and travelling around 4 hours. Thought interview went well (although it was a bit casual and interviewer seemed unprepared) and followed up with a thank you note. But after not hearing anything, I contacted the employer asking for an update. They have just ignored my emails, which I find exceptionally rude. Glad I've had no job offer - this indicates that this would be a bad place to work if they treat candidates like this.