IPhone home and power buttons not working, how do I fix it?

I have an iPhone 4 with iOS 6.1.3 and I was in the settings, deleted 2 facebook apps, and now my home and sleep/power buttons are not working, and I can't exit settings. I've tried leaving it alone, and after 10 minutes the screen's dim and still on the settings, and when i touch it it brightens back up.

I've gone into Accessibility and turned on Assistive Touch, and tried "Home" and "Lock Screen" But neither are working.
I've also tried holding both buttons down, respectively, an together. The screenshot still works.
I'm in the middle of letting the battery die right now, but I'd really like to have it working for school tomorrow, since it has my schedule and homework planner on it.

Thanks for your help!

Added (1). I also can't click my banner notifications

And no, i plugged it in to my comp and it didn't work.

Actually try plugging your phone into your laptop or computer… Your home button may be stuck? & that's how I normally get it unstuck 89% of the time.

It must be broken.contact the reseller for exchange.