About my iphone charger blowing up while charging my iphone

So i plugged my phone in, then set it down then i seen a little spark and didn't think anything of it.
after i tried listening to music and the volume don't work now! Even tho but doesn't show up! What the hell?

I would get it checked in and replaced. Your charger probably blew up one of the speaker cords and now you can't listen to anything.