Hello, my friend has a Nextel Motorola i836. They have number that keeps calling them that they do not want to continue calling them. Is their a way to setup a call restriction or block like on Alltel's Nokias with this phone? I've scoured the internet and user manual can't seem to find anything. But they do say you can... "You can prevent your phone from making or receiving long distance, incoming, and outgoing (except 911) calls." But it doesn't say how to do it. Or if it can do it for just for a specific number.... Thanks for any help!