found this on google:
Your number has been spoofed.
http://en.wikipedia.org/wiki/Caller_ID_spoofingIt isn't Google that failed, it is the Caller ID service that has been compromised illegally by the person that is spoofing your number.
Google doesn't own or operate the Caller ID service
The Caller ID service, however, is susceptible to fraud. Using a practice known as "caller ID spoofing," callers can deliberately falsify the telephone number and/or name relayed as the Caller ID information to disguise the identity of the calling party.
There is nothing Google can do because this isn't a problem caused by the network or the phone.
Spoofing is a crime as it violates the 2010 Truth In Caller ID Act. You can try to track down the source yourself, but it's an intense task and usually doesn't lead to enough information to get police involved.
More information on stopping and reporting "spoofing" is available at
http://www.fcc.gov/guides/caller-id-and-spoofing