Called around 3 pm today.  Left no message.

This robodialer calls every day. I'm blocking it.

Turned out to be US Holocaust Memorial Museum calling about my membership renewal (which I was late in sending in), so not everything from this number is a scam. Caller agreed to add me to do-not-call list for future.

I didn't give them my telephone number.  I wanted to continue supporting the museum, but shouldn't be called about such matters.  I blocked them!

Constantly call doesn't answer when I answer the phone