I CAN'T DELETE A SONG OFF MY IPHONE AND IT'S MAKING ME CRAZY?

Okay so i had a few songs of an album on my iphone but then i plugged a USB into my computer and i have the full album now so i deleted the few songs i had off itunes and now i have the full album on itunes and my iphone. But in my iphone i have two copies of the same song! But only in my iphone. I removed all my songs by unchecking them and then re syncing it AND EVERYTHING DELETED EXCEPT FOR THAT SONG. And it's not part of icloud cause i turned that off and they all disappeared EXCEPT FOR THAT ONE SONG. I can't swipe it either. What do i do? I literally have no way of deleting it.

Erase all of the media content from your iPhone and try re-syncing it. If you really want to delete that one song then you could always do a factory reset and restore your iPhone.