See who else is getting the same weird calls as you with WhoCallsMe?
Who IS that guy who keeps calling me? He never says why he's calling, just leaves a number and says I need to call back. After ignoring the call for a couple of days, it starts to grate on you. You Google the number but it comes up blank. What to do now?
WhoCallsMe? is a website where you can report calls like this, and maybe find out just who it is. Enter in your caller's number and see if anybody else has gotten this same call. Turns out lots of times it's a collection agency looking for the folks who had your phone number ten years ago.