Infoserve called today pretending to be calling from Microsoft Bing and said that they need to verify my listing on Bing. I knew this was a lie because Microsoft do this online via Webmaster Tools.
When I questioned him further I said it was on “behalf” of Microsoft. Again, this is a lie. Although Infoserve have 4 members of staff who are accredited by Bing for advertising, they are neither endorsed, approved by, or agents of, Microsoft.
They are calling to get details of people at the top of your company in a bid to sell them services, probably Pay Per Click.