Verizon landline is under the umbrella of Verizon communications with Dsl and the directory assistance people that make the phonebooks. Verizon wireless is actually a seperate company and is the american face of the European company VODAPHONE which is the biggest cellular provider around the world with nearly 189 million cellular users. The Name verizon wireless was taken after a merger to make a more familiar face. For your issue I would go to
www.verizon.com as it is for the landline side of things and click contact us for a corporate number or you can call 1-800-FREE-411 and give them the business name of verizon corporate and should get a number through that too.