When I worked as a "mall cop," we were handed a five year old boy by an elderly lady. The boy had lost his mother and had been crying, so she brought him to us.
We got on the PA system, announcing him every ten minutes. After half an hour we called the number for cops, that dealt with child related stuffs, but were told that it would be at least an hour before they could send anyone.
About 50 minutes after we had started announcing him, the mother shows up.
I was quite angry, so I told her that we had been making the announcement for almost an hour.
Her answer: "Yeah, I heard. But I wasn't done shopping yet."
I took her name and passed it on to the police, but I doubt anything came out of it.