If you find a app that will block calls.  Please let me know too.

Blaze

yeah really, I hate when I get interrupted in a meeting from an unknown or blocked number.

If you decide that you would like to keep your cell phone number a secret, you will need to block your number. Blocking your number can be done temporarily or permanently. Temporarily blocking your number on a call by call basis is a good idea if there are only a few people whom you wish to hide your number from. To temporarily block your number so it is not displayed on the recipients caller ID simply dial *67 before dialing the number (I.E. *67 111-111-1111).iPhone 5 release date

BuzzOff will block any phone number, block callers with private or unknown callerid, do not allow caller to leave a voice mail. BuzzOff is the only callerID blocking application for the BlackBerry that has Pickup and Hangup feature. This will not allow the caller to leave you a voice mail. The caller will just hear a busy signal or the message from your carrier. You can also select the phone number to block from the CallLog, Messages and AddressBook application. Just select Block Caller from the menu and select the type of block you want.

Features:

* Block any phone number
* Block unknown or private callers
* Block wildcard. eg: 1800* will block all calls starting with 1800
* Pickup and Hangup. Do not allow caller to leave you a voice mail
* Quick block marketing callers: eg: 1800, 1866, 1877 and 1888 callers
* Match last digits in the number. This feature is useful for International users where you can tell BuzzOff to match on the last 3-10 digits in the phone number
* Integrate with CallLog, Messages and AddressBook apps. Block caller directly in these apps
* Very small footprint only 35K
* Easy to use
* Works on OS 4.2 and higher