Hi Lindy56,
Thanks for pointing that out. I looked over your support case and noticed that you were under the impression the fact that images appear under multiple folder filters is an indication that there are multiple copies of those images stored within your account, but that is not actually the case.
Even though a single image may show up when All Folders, ---, or No Folder are selected from the "Show Images In" drop down menu, the image is still only being hosted in your account once. If you delete that image, it will no longer be present when any of these filters are selected.
I see that you have deleted enough images from your account to bring your usage down under the 1 GB of space that is included with your plan so, provided you do not exceed that usage level again, you should not incur any more additional image hosting charges moving forward.
While looking into your support case, we did notice that the "All Folders" and "---" filtering options on the Manage Images page do exactly the same thing so we are going to look into removing one of those.
-Mike