Who called from 6579991597

I don't know who this is so I didn't answer my phone is suppose to be on a do not call list but they still calling

We got a call from this number but someone hung up after 3 rings....  Hmmm....

657-999-1597 calls at least once a day,, rings twice, then hangs up

When I answered the phone, there was a pause and then a woman said she wanted to speak to "A Mr. (insert last name).
I said he was sleeping and asked the reason for the call.
She said she was doing a survey and would call back later.
The caller ID identifies it as "Anaheim CA" only.

No one there when I answered. Call ID said California Call.