SPAM call not answered do not display in the call log

[MikeLieberman]

I am GMT +8 so my 3AM is 3PM in New York City...

I do NOT answer my home after I retire for the night at 10PM. Three calls came in last night. I did not answer them. This morning I was just curious to know where the calls were supposedly from... The call log does not show them. Why?

And why isn't the call screening system working to keep these calls away? No one who actually knows me would call during those hours. Clearly this is SPAM and I suspect Robocalling.