Keeps turning off

I have a Sandisk which is a couple of days old.  I have plugged it into my computer and charged it and filled it with MP3s.

The most I have got out of it is one full song.  I thought perhaps I hadnt’ charged it properly so I charged it for 3 hours in each of the USB ports as I couldn’t tell when it was charged.  I have then tried to listen to music and it just turns off.

Now it turns off when I press Play All.  I press the power button to reset and go back play music and it turns off.  I reset and it turns off.

I’m getting very frustrated and dont’ know where to go from here.  I would appreciate any help.

Return it and get another one. You apparently have a bum unit.