galaxy s6 will not charge

When you plug the charger in, does the charger wiggle at all? If you havent already, move your charger around a bit and wiggle it and see if anything happens. Have you tried a different charger? Or tried the current charger on a different phone?

Have you tried holding the power and home button down until the Apple logo appears?

It may also take 15 to 20 minutes of charging for anything to appear on the screen if the battery is severly dead. If your charger is fine, and nothing else works, I would say you have a bad battery.