I think there's rap in it, but its danceable kind of techno, not too far from the song Friends (Friends they come and friends they go, nothing really lasts forever ever)
And the lyrics goes like on the chorus "Why don't you leave me alone? Oh na na na oh na na na oh na na na" (I don't know if the "why don't you leave me alone is the right one but all I can remember is it sounded like that" please do help me find this song thanks :)

Leave me Alone by Michael Jackson?

Thank you for answering but no, its not the one.. it's a girl singing the song..

I'm a bit late but I know what song you're looking for!
Perfomer: Twenty 4 Seven
Title: Leave Them Alone

Have fun!