Could it be a scammer/ hacker or someone actually trying to get in contact?

Got a call on my iPhone and it identified the number as “John doe” obviously not really the name. And googled it, nothing really came up. Except orbituaries and random pages. Googled the number nothing came up. Then I saw on Facebook I had a friend request with someone with no pictures but the name is Jessica Doe. I look through the profile and there’s literally nothing to identify this person except it says their date of birth.

But I find it interesting that they share the same last time. I don’t recognize either name and nobody left me a voicemail so now I feel like it’s a hacker or something.

And blocked them both, but I just feel creeped out and paranoid about it.