Stupid ad for "new sports channels available in the 3000's"

This started a few weeks ago. I get this full-screen ad advising me that I now have dozens of new sports channels (that I do not xare about) and it WILL NOT GO AWAY. I can change to a different channel and it goes away for a short time and them comes back. I have a plasma  TV. Are you going tio buy me a new TV when this abomination burns an image into it? My question is: What is this swill, why does it hog up my TV, and how can I get rid of it forever?

You are aware that you have competititon, aren't you?