Anxiety - producing call
We have a landline. We get numerous hang-up calls daily. Usually it's just silence. Today, a woman called and asked for me by name. I picked it up, but she'd already hung up.
I did not recognize the area code. Now I'm anxious. It was probably bs, but I'm not used to hearing my name.
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It was a human, and she asked by name. That's what freaked me out. I'm a very private person. I'm on the DNC database, but it's useless. I forgot too make our LL unlisted, so it's out there. My fault 
Did you look up the area code? Maybe that might give you a hint? Worth a try, I guess.
Though nowadays it seems many numbers are spoofed. 
Back in the day, when I was a mere young un', my sister would take great delight in calling me and pretending to be Southern Bell (remember them?). She was great at voices and sounded like some collections person. Even though I knew I had nothing overdue, she'd get me every time.
Sometimes she'd be the electric company.
I have a nickname, so if someone asked for me by my real name, I used to freak out. She, of course, knew that. 
Just put the area code into google, and you'll at least know the part of the country. But, probably spoofed anyway.