Ha ha ha, God I hope your kidding! Google making direct cold calls? When I pressed him about who he works for, he said "Google", I laughed at him and asked for his name, department, direct phone number... and that's all I got out before he hung up on me. Google, yeah, they do that.
Same as other callers - they called my Google voice number - it asks for the caller to state their name...nothing. This is followed by 3 minutes of silence in message. I'd be happy to share the recording but just turn everything off that makes noise and look at your watch for 3 minutes - same result.