Preventing Identity Theft involving your Phone Service...

To help prevent fraud and identity theft, check with
your telephone service provider(s) about the option to
provide a password which must be used any time your
local, cell, and long distance accounts are changed.

Exercise that option, if it's available. If your
calling card has been stolen or there are fraudulent
charges, cancel it and open a new account.

Check with your service provider for their fraud
hotline number. In addition, you may want to ask your
telephone service provider to implement a "carrier
freeze". This prevents a third party or competing
service provider from changing your local toll or long
distance service carrier without your permission (a
practice sometimes called "slamming".