Who called from 4154464193

Called me several times.  No message.

Called me once this week. When it called me last week it was the 415-446-4197 number.

When I paid for reverse lookup, all I got was "Diamond Certifi". I am calling the phone company tomorrow morning to find out what this name means.

Customer feedback survey of Diamond Certified merchants listings.    I used a auto repair service and they called as to customer satisfaction.

I got the same. Is it legit?

3/24/15: Diamond Certified is ID - no message left - I don't want to be certified by any diamond, although I think they are just a commercial business rating agency (not crooks) - but why not leave a message?  Blocked.