Why did my battery drain when plugged on the charger (Samsung Galaxy S4)?

A

AC Question

Problems with my Samsung galaxy s4

I just bought a new samsung galaxy s4 just 4 days ago and last night I took it off charge because it was at 98% and went to bed. Woke up this morning and my phone was off an would not charge. Can someone help me please? I've tried everything possible to get my phone to turn on and still nothing, I even put it on charge for over an hour and it still won't turn on.. Please help