Originally posted by: jdjbuffalo
What kind of phone do you have? If you have a Blackberry you can use a program called Black and Whitelist. http://software.crackberry.com/product.asp?id=12708
You may be able to get your cell phone provider to block them for free. If they won't do it then your options are to either pay for a program to do it or pay for the carrier's parental controls which let you limit who can send or receive text/calls to your phone.