Posted an expensive DSLR camera on KSL classifieds and started getting texts from this #.  They indicated they would buy the camera for full price.  I replied telling the person my phone cannot send out text messages but I can read them, and so I prefer a phone call.  I kept getting texts and so I googled the # and found many posts indicating it was a scammer.  Immediately after leaving a voice message at the # that I was turning them in I called it back and got the recording that it was disconnected.
I am glad I checked out this malicious persons #.

Posted a laptop in Bismanonline. Got the same text about the b-day gift and the daughter, etc. Told her was cash only and I could not ship it anywhere. (i'd been reading all these posts as her and I were going back and to via text). Then I got the kidney surgery line. My response: "LOL no favors. Sorry about your surgery lasting for so many months now. Maybe find someone else to scam. I googled your number and knew about your kidney surgery. Lemme guess...you want my paypal info and for me to send it to an embassy??? Sorry honey I am way ahead of you. Bwaaahahahahaha."
:-D