Nestlé Promotion Marketing Fumble

So I unwrap this new Butterfinger Crisp candy bar and there’s a promotional code with a phone number printed inside. I actually saw this the other day and meant to call it and didn’t get around to it. Today, I had a free minute and decided to give it a call. I’ve posted the recording here.

Basically the nice lady on the recording tells me “ha! fooled you!” There is no promotion running at this time, but apparently I am supposed to hold onto this chocolatey wrapper and periodically call again to see if they have a promotion. They do mention I can check their website to see if there’s a promotion – but they don’t tell me the web address.

No indication of what might be in it for me. What were they thinking?