How to delete purchased TV shows from iPhone 5 (ios 7)?

I have quite a few different tv shows on my phone that I'd like to delete. I've tried swiping my finger from right to left to delete them, but that doesn't work. I would really like to be able to solve this problem without going to the Apple Store. I've gone to Settings<General<Usage< and done all that but it doesn't delete them off my phone completely, it just deletes my history. I've also done the thing where you can only show downloaded videos, and I want to get rid of them COMPLETELY! How do i do this?

You can uncheck the TV shows on your iTunes library first, and then sync iPhone 5 with iTunes, the TV shows will be deleted from your iPhone. You can't delete the TV shows on your iPhone directly. If you don't like to use iTunes, you can also use this iTunes alternative, it's easy to delete files from your iPhone.
http://www.reviewstown.com/itunes-alternative.html
Hope it helps. Feel free to email me if you need further help.