I have had items come to my house and have delivery conf. and no one signs for it and it just gets left on my porch with no one home. so maybe the buyer lives in a not so swell neighborhood and it got stolen. I have had delivery conf. emails delivered also and the mail man never left anything too. needless to say he was a lil mad when he had to come at the end of the day and hand deliver that to me. he was cursing while alking down the drive!!! so maybe their postal worker is just lazy like mine. Just saying that there could be reasons other than them being shady that's all. sorry you had that happen though.