Unlinking Phone Number from other devices?

I've been trying to get rid of my phone number on the other devices I'm linked with on iMessage and iTunes. I made my own Apple ID so I would disconnect from the one that I was sharing with the other devices. I also deleted the old iCloud account I was with with my old Apple ID and connected it to my new one. So with that I thought my number would be deleted, but instead my number is still there. I could do the uncheck thing, but I really just want it gone. I've tried doing the unlink thing that was posted, to sign out on all devices but that wouldn't work. How could I remove my phone number on all devices??