⟩ Tell me what would you do if your replacement didn’t show up?
I would first try to get in contact with my replacement to see if he is on his way. I would then tell my manager about the situation to see if anyone else could relieve me in the meantime. Then, I would wait until a replacement came.
I wouldn’t leave the store understaffed. I would call my manager to let him know the problem and see if a quick solution could be found.