Hold down the sleep/wake button at the top of the phone AND the Home Key. Hold both of them down at the same time for at LEAST 20 seconds or until the phone resets When you see the silver Apple logo, release the buttons and immedietly plug the iphone into either your wall charger or the USB cable connected to your computer (to provide a power source.)
If it works, please click Accept as that is how I get credit. If not, let me know and we will keep working on it. Bonus NOT necessary but ALWAYS appreciated!!
Your funds will stay in your account for use on another question in the future or you can request a refund with the link below. Best of luck getting the issue resolved!