Humm I found a video to anyone who has this problem. A way to work around this problem till you get your phone fixed or replaced.
Go to settings then general then to accessibility then down to assistive touch. And turn it on. It puts a little button on the home screen that brings you to a menu where you can change the volume if those buttons broke or you can lock your device or even get Siri up. Kinda cool I guess. It also lets you record a gesture, but I haven't played with that yet. Actually I just noticed that buttons is on every screen and you can move it around if its in the way. Wonder if this will get annoying lol