insurance phone numbers

How can I block phone numbers in your home?
This thing Automated Health Insurance has been calling me daily in recent months. If you can imagine its annoying place. Its always the same number, so how can I block this?
you can get this little device called TeleZapper. that connects to your telephone line. to stop all calls coming from an automated dialer. when receiving a call from an automated dialer that makes a tone that makes the phone is disconnected to an autodialer, so they do not call your number back. the problem only. do not know who is calling unless I have to call d. If the caller ID says unknown or does not say who is calling for his good call of an 800 number and a call from an automated dialer. Most of the time. you can get one at Radio Shack.
Farmers Insurance Help desk phone numbers