This excerpt taken from the EFA DEFA14A filed Oct 1, 2009.
Q: How do I or my clients get on a do not call list?
To be added to the Do Not Call list, your client, or you on their behalf, should call Broadridge to have them make the change. This is the most efficient method because the instructions are added and take effect immediately at the time of the call.
If you, or your client prefer not to contact Broadridge, we can take those instructions at iShares, however, the effect would not be immediate as there would be processing delays in comparison to a direct call to Broadridge. You, or your clients, should be prepared to provide us with the Full Name, Address and Phone Number of Record in order to facilitate this request.