I could find that crack on seer37's picture.
Look closely where the dent is: look above that region you could find a tiny line going by which is the crack.
But I wouldn't consider that as a major issue since its tiny, may be seer37 didn't notice it that much.
Best way to solve this would be doing a partial refund or taking back only the black phone.
Hope you get it sorted out.
But you could have done this privately through pm that posting a thread here.
My 2¢
Look closely where the dent is: look above that region you could find a tiny line going by which is the crack.
But I wouldn't consider that as a major issue since its tiny, may be seer37 didn't notice it that much.
Best way to solve this would be doing a partial refund or taking back only the black phone.
Hope you get it sorted out.
But you could have done this privately through pm that posting a thread here.
My 2¢