I got an angry call regarding someone's laptop not working with several shopping sites they were trying to use a couple of credit cards with.
They told me it took two of them and it wouldn't give them back.
I was thrown off at first until I asked exactly what they did at the transaction page.
They told me they found the slot to insert the credit card and the laptop 'took it' but it would give the card back.
They were nice enough to drop off their laptop so I could retrieve their credit cards from the network card slot.