Promotion is useless at the moment. You guys don't understand that if there's no airplay to cushion the end of the promotion effect then it will just fall back down to where it was before. It needs to gain airplay first.
Also, interestingly, "Crazy Kids" didn't enter Australia's top 100 songs last week on the radio:
http://www.aumreport.com/amr100.html
I expect it to enter nigh next week. Good sign though - If it's this high now, it should reach nice heights once airplay really kicks in!