Support Can't seem to get rid of supposedly deleted downloads

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http://androidforums.com – So my Galaxy S4 has this weird thing. I tried to delete all my downloads. I pressed the button and thought the downloads already went poof. I went on photo album and found all my downloaded memes I thought got deleted were still there. I opened up my emulator and found that all the roms I supposedly deleted still show up on the download folder. So I try to clear it, but the files don't show up on downloads. How do I delete those files if the downloads app doesn't show it? Is there any other way to delete these files other than clearing the phone. (General)