Person calls me. I answer. They ask me who I am. I didn't answer, but countered with, "Who are you?"; after all, they called me, not the other way around. They responded they have a number with the last 4 digits of my phone number. (This means nothing to me and I don't know this person) I truthfully answered I do not recall calling anyone today. (Truth) I have no idea who they are, but that a weird way to call someone and then ask "who are you" when they are the ones that called. Suspect a scammer, but unsure.