Constantly change their number, so this number probably belongs to a legitimate customer, but here's the usual lead-in: "Hi, because you've stayed at one of our premiere resorts in the past, we'd like to . . . (Click)" and I hang up.
It's a real person, because when I asked which resort, they paused for a brief moment and then continued. About once or twice a week for the last 2 months. I block the number, they spoof a new one.