I sent
DVC an email about this and said that it was embarrassing to refer people and then have them not get the gift card and that I would like to know the status of my referals. I let them know that since the people were upfront when they called that DVC should have let them know that they were not eligible for the gift card instead of letting them do the tour and not notifying them they weren't eligible.
I will let you know when i hear back