Research! But left no message on recording machine so I guess their research was not important enough plus I wonder if they know my first or just the phone number. See if they call back.
Research firm of some kind. They wouldn't tell me what they were researching unless I confirmed my name. Caller sounded like a native English speaker (a black woman most likely), so at least it's not a foreign scam. They called back today so on the blocked list they go.