Cant remove RSS.feed

Hi,

I have some problem with Google. and I do not know if it is Joomla or Hikashop causing it.
I am pretty new to this... Anyway, Google is indexing my categories, not only one time, but three times - as type-rss.feed and type-atom.feed. and I don't want that since it counts as duplicates according to Google. How do I remove the feeds? Any ideas?
I tried to unpublish the modules "Syndicate Feeds" and "Feed Display" but I am not sure if they have anything to do with it...
The .feed still shows up att google..

Best regards,
Fredelius

I have changed to no feeds, but the feed-pages still exist when I write site: in Google. I did this some days ago.
I'm aware that it takes some time before the pages disappear from Google, but shouldn't the pages stop to exist on my domain, after I've changed to no feeds?