What can I do to block someone from calling?
In order to block someone from calling, you should call your networking service provider. The provider will block the number after you give satisfactory reasons. Visit http://www.ehow.com/how_4882320_block-someone-calling.html for more information.
Delete their contact
Answer and say this: Hello, we are sorry but this phone number no longer exists. Go try annoying someone else. Thank you!