poor comunication, orded my son the iphone 6s over...

poor comunication, orded my son the iphone 6s over a week ago.. went for the unlocked pristine condition for obvious reasons the phone arrived today as a GRADE C with a crack at the top corner, LOCKED to EE with a sticker stating he has to wait 4 more days for this to be unlocked... tried calling and e-mailing but no responce after reading these reviews im very dissapointed and will be contacting trading standards if no contact is recieved today to resolve this matter!