I lost 3 credit cards INSIDE an airplane (hello AirAsia!). I only realized it when I turned on my phone while queuing at immigration and was bombarded with dozens of "Successful transaction" messages. That's ~30min from stepping off the airplane. When I checked my statements, I saw dozens of physical transactions (swipes/taps) with different merchants in different cities from the airport.

All 3 cards have different PINs. All require a PIN for transactions above ~USD200. Yet the banks rejected my disputes because "it's a physical transaction, so you must be the one doing it." Apparently, they all think I could fly to different cities, buy different items, and fly back to wait in immigration, all in 30 minutes.