If you wish to block a persons’ number and prevent them from calling your verizon landliine or cell phone line. Then follow these steps. If you have a smart-phone for example, a Galaxy S4 or iPhone 5 and have the My Fios App installed you can view call logs of your phone and when you click on a number you can choose to block that call.
The other way is to go to: www.verizon.com/fiosvoice Click Calling Features Click Incoming Call Block Here you can enter a phone number you wish to block. You can block up to 10 numbers.