cell tech wireless there is something wrong with these phones brooklyn Ny New York

my daugher ordered 2 galaxys s6 cell phone from the internet and the company that sent it cell tech wireless 612 brighton beach ave brklyn ny 11235. and one of them is all scatched up on the outside cover top and bottom plus it sizzles when you open up some apps and then when your talking to someone the phone goes out you or the other person can't hear you talk . and also it reall sucks i need my phone i would like a new one . and the other one it only don't receive messages when someone texts and calls . when trying to call someone from the other phone you have to keep restarting it and then you can text or received message from 3 days ago so there is something wrong with these phones