[header] How to block people from calling you on your home phone [title] Use caller id. [step] You can identify the caller before picking up the phone and, if it is an unwanted call, hang up or let the call go to your messaging service. [title] Block a phone number. 
[step] Nearly all phone companies have ways in which you can block calls from specified numbers. With some companies, it can be done by entering a code and then typing the number to be blocked.