@superchaos, what the rep advised you is wrong. The only time the BOGO offer is available is at the time of purchase. I know, I use to work for VZW! Once your equipment is mailed the system won't recognize a BOGO offer. The only way to correct this is if VZW really comes out with a BOGO offer for the Incredible and its within 30 days of your purchase, you can return the device and process a new order that will include both. I used to get calls from people saying they were told by other reps that after they purchased their device and activated it, they could still get the BOGO offer.
The reason why you can't do this is because the way their system was built, during the time of the purchase it will recognize the BOGO offer and automatically discount the second device to $0. And when you purchased your device first and then call back for a second the system will charge you for the equipment and even with manager approval you cannot modify the system to show it at $0.