Apr 24, 2013
4/23/13 Your telephone provider will not tell you how to block unwanted calls because the callers also are customers. My service, COX, shows the caller's name and phone number on the tv screen. I emailed the manufacturer of my land-line telephone. A representative needed the model number. He gave me step-by-step instructions on how to block calls showing "Unavailable" or with no telephone number. It's wonderful, it rings once and then the call is cut off. I smile.