Has Anyone Heard This Song!!?

I heard it in aeropostale today it sounded kind of like the veronicas but i don't think it was because i checked on itunes and it wasn't by them. It said I don't care and other phrases that relate to that concept. I really need to know what it was, i really liked it. Sorry for the limited info but if you have any guesses i would really appreciated it even if they aren't right