If you are deaf, get on a deaf plan. Sprint will unlawfully block all of your incoming calls. Heck, its only $40, ya get what ya paid for. LOL
Try this 3rd pty App for Android and Iphone device for blocking unwanted calls/unknown calls)
iTm Calls Blacklist- Http://itunes.apple.com/us/app/itm-calls-blacklist-
Hope this helps
You can search the web, android market or apple store for applications that can block a pvt number.
What type of device do you have? There may be some type of application that might work on your phone.
I do not want any calls coming to my phone that do not show a number. It doesn't help much to be able to block numbers when those same numbers can turn around and make themselves "restricted" or "blocked" or "private" and then still be able to get through to our phones. Is there a solution for this that I'm unaware of?