First, you can try emailing and emailing and emailing using the change form. I have had no luck doing that. It goes into a black hole. But, just in case, you can try.
Your emails go into a black hole, unless you do something drastic. It doesn't matter *who* you are. I heard someone had luck changing their site when they got a lawyer involved, but in my experience, you can't change anything in Yahoo if you are already there.
Brett, I am trying not to be negative.
>anyone have experience with the impact of such a listing on Yahoo search results
Yes. Sometimes it will hurt your regional sites.
The home office of the company I work for is in Europe, and the Yahoo page goes to the European site. While the company's branch I work for is in the United States, we are considered "regional" (regional to the European home office)...however, there is not a "regional -- United States" listing in Yahoo for firms in the United States. So the US site is put under "Big firm: Regional" It now takes three additional clicks and a bloodhound for Americans, the majority of Yahoo.com's end users, to find the American site for the company I work for with American products.
It is something to keep in mind. If you do end up getting Yahoo to do this for you, I would definately put links on the "main" site to the other regional sites. Otherwise, they may get lost.
Another thing I would try: call the advertising department and ask them about this page. (I don't believe you have to pay for it...but act like you believe you do)
Talk to a person, and keep calling until you get one. When you talk to them, tell them you honestly thought the company had to pay for this page to be made, and how much is it? When they say, "no", then ask who you need to talk to to get the page made.
I would try that. I have had zero luck with emails. Laisha might/ probably has a better way, though.