How To Remove Advertising From Your Twitter?

[Tierra]

I recently signed up for some kind of advertising at http://buzzbeeadvertising.com/twitter Its supposed to gain you more twitter followers (which it didnt in my opinion). However it automatically updates my twitter trying to get people to sign up. Ive changed my Twitter name and password even tried to delete the updates which just come back. I emailed the admin for the website but have yet to recieve a response and I cant find any other way to revoke access. Any Help?? Please??