What keys?

In one day, three people left their car keys on the counter. I really don't know why these people choose a specific day but it does get quite a comedy value when you go "I've found some more keys" and the reply is "NOT ANOTHER SET SURELY!" by the manager.

The first one came back pretty quickly so I hadn't given them to security for their...safe keeping.

The second set I gave personally to a security officer, who took them to their control room. A frantic man came back around 3 minutes after that and he was quite rude so I told him that "Oh the keys...security have removed them. You will have to deal with them now." I gave him directions on how to get to security and then he ranted that I should have kept them and now he has a long walk to fetch them. Easy solution - don't leave your keys on the counter.

Then bloody hell a third set, this time with a newish looking Mercedes key attached. We were about to shut so I gave them to an 'operative' of the food hall. I hadn't seen him talk to security so I strolled over about 10 minutes later and this happened:

"Umm did those keys go upstairs?"
"What keys?"
"The set of keys I found on our counter and gave to you to give to security"
"What?"
"It was about 10 minutes ago, over there"
"I can't remember that"
"You put them in your pocket"
"Oh lets have a look then..ahh yes the CAR keys!"
"Yeah"
"What about them?"
"Are you giving them to security because we're going soon so they'll need somewhere to collect them?"
"No I don't have time!"
"What are you doing with them then?"
"I'll keep them until the morning unless you want them back"
"Yeah I'll just have them back it will probably be easier"

I gave them to security myself. I mean - what an idiot. First, he had no recollection of what had happened just 10 minutes ago. Second, he was going to keep them until the morning. What use would that be to the person who had lost their keys and couldn't drive home?!!