Ouch, that sounds awful. If you go for the refund, I would pay for signature confirmation.
I've warned some very casually cosplaying friends away from EZ Cosplay. Off the top of my head, there are stolen photos from CosplayMagic, Kipi (Japanese cosplayer), Kirana (Ukrainian? cosplayer) and Kirawinter (photographer), and a taobao wig store whose name eludes me... At any rate, that alone says to me that they are lacking in scruples...
RIP CosRevo, Love Laugh, Sweety Pop, Cocosilver.