Why won't my Z30 charge except via USB to PC?

Hi guys,

I am wondering why out of nowhere my 3 months old and beloved Z30 won't accept a charge unless I use a USB to plug into my PC? Even when I press both volume buttons to reboot it does not charge with either of my two wall chargers. I did not upgrade any software (I am currently on 10.2.1.2977).

Any help would be VERY much appreciated as the hassle of USB charging is too much.

Do you have the charger that came with it? 2 of them? Welcome to CB.