Sorry to hear about your loss. A bit sad isnt it the society we live in now. I was on a trip to Singapore a few months ago, when my family member accidentally left her whole handbag in a taxi. Passport purse handphone all in there. We slowly tried to retrace footsteps, in case it fell etc, called the taxi company, but couldn't trace the taxi number.

Very frustrating. While we were deciding what to do, guess what happens, the taxi driver turns up! He realised the bag was in his car, and quickly came back to find us. Even when we offered a token amount to thank him, he refused.

Not to say this doesn't happen in KL as well, but I would be more pessimistic, if I misplaced any of my stuff.