I chose text links, but text banners are served

I chose text links to conform to the formatting of my website, but occasionally text banners are interspersed.

Is there anything I can do to ensure text links are only displayed?

 

First be certain you are using the correct code, then empty the ad textfile as it may have some image or text banners ads cached if the code wasn't correct in the first place.

 

I think the txt file caching was the problem! Thanks!