I've been getting a spate of 657–152 xxxx numbers for the last week. All hangups. Does anyone have a clue who this RoboCop scammer is?

Same as Bill above. It's getting tiresome.  I don't answer it.

Unfortunately, I can only report the same. I have been getting calls from numbers like these over the past couple of weeks. I don't answer anything that says "name not found" or anything else unknown for that matter. Additionally, although 626 is a local area code, 152 is not a prefix in this area code.