The glitches I have in my w.w.z. Game

I wasnt able to get notes in the drawers,ammo, and computers, looting the people for write notes.Cause when was getting in this stuff in all game none of the drawers where opening, I wasnt able to grab all the ammo in the game, I wasnt able to loot all the people in the game, and I wasnt able to search on all the computer in the game. So I feel for to ask the creators of world war z the game to fix all these glitch know.and when It start at the beginning of the game story mode a second time it freezes and nothing is responsible when is frozen. And I really need it fix know Please

Wxjunkies about World War Z, v1.7