IPHONE DEAD - SOS!

Okay, seriously freaking out here! My iPhone/iDevice/phone just won't turn on/power up/start. I tried everything! Plugged it in/Chared it up/Tried the charger, held down the buttons/power button/screen for ages, even reseted it/restarted it/tried a factory reset. Nothing is working! What am I supposed to do? Is my phone/device/iPhone totally busted