There are businesses that _only_ list their 800 numbers, and you can't find out the real phone number associated with them through directory assistance.
I'll leave it to others to call such a joint and give their name, address, and credit card number to such an establishment.
It's especially annoying when they've got an in-state or other non-nation-wide 800 number, or when you're calling from outside the US, especially when they're a business you'd like to be able to reach from anywhere, any time, like the travel agent your office uses
Your straining my credulity to claim that you can't get ahold of the regular phone number of them. Come on, are you 7 years old?
And they may _only_ have the bank of phones that's got ANI service on it, and not have other phones.
I don't think phone service is sold that way.