Deleted folders keep reappearing

Ok so it seems as though I've had the same problem as everyone else. My Dropbox was working fine, had some folders on there that mostly contained music. However, I recently backed up a bunch of different computers and used Dropbox to store the files. This ended up being ~200k+ files. Initially, the Dropbox app synced it until I deselected it using selective sync. What I did not expect to happen afterwards, and ended up causing my Mid-2015 13" Macbook Pro Retina to start blowing out air like it was on fire, was that it had to download what was then a massive file list. I guess Dropbox calls this "indexing", despite the fact I had already chosen for it not to sync. So access Dropbox though the browser and delete the folder that contains all the files. Didn't work. Uninstalled and reinstalled the app, nothing. Today, I went back and saw the folder had reappeared as others have stated. Deleted it again, froze my browser so I force quit. I come back and it's gone, I double check the event log and it states that 200k+ files were deleted. I check the icon in the menu bar and it still shows its attempting to download and index the file list, so I go to security settings through the browser and unlink all the old devices I no longer use, as well as the computers I had to backup. Still the same issue occurred. Then, what ultimately solved the problem was simply deleting the Dropbox folder on my computer which then brought up a prompt window stating that "this computer used to be synced to your account, do you wish to place the folder back in its location or relink the account". Choose relink and login, problem solved.