How to delete duplicate songs on iphone 4, and already erased songs?

I have songs on my iphone that are no longer in my library. I've turned of my icloud, deleted everything from my phone and re synced everything, and still the songs are there.

This also occurs with duplicate songs. I have no duplicate songs in my library, but they are still duplicated on my iphone. How do I get rid of these as well?

I even removed the songs from my usage and still the ones I didn't want were still there...