want to delete music from iCloud and purchased tab in store

I bought itunes match and I want to delete music from the Purchased tab in the Itunes store that is there in the icloud. I backed up the music I want. I turned on itunes match and downloaded the music and then deleted it all and selected the option to delete from icloud. After running itunes match again it says there is no music in icloud so I thought all the songs were gone from icloud. I go back into the Purchased tab in the itunes store and all the music I ever bought is still there. Is there a way I can get rid of all the music in the Purchased tab? I thought by getting itunes match and deleting from the icloud it would get rid of the music from the Purchased tab. Please advise who to get rid of the music from the Purchased tab in the itunes store.

I am doing this on my macbook with Lion installed and latest version of itunes.

I have deleted and recreated the library at least 3 times as well trying to vanquish that music from the Purchased tab.