How to get annoying cell calls

My local county wants my cell telephone number for Reverse 911:

Examples of uses may be:

Request for community assistance in locating missing children
Evacuation notices due to emergency situations
Be-on-the-lookout notices for dangerous criminals in your area

I would like to hear about true emergencies, but I am disturbed that their first item on the list is to intervene in child custody disputes. We have Amber Alerts in this state, and they are nearly always just some disagreement between the parents about spending time with their kids, and not a real kidnapping. I would rather not have some county bureaucrat call me on my cell phone just to tell me about some minor parental dispute.