You are welcome. OK. Keep us informed if anything else develops - for instance, if another Windows Driver Package slips in despite the setting you did. You disabled it on 3/1/16.
Also, if you want, post a picture (including the version) of the other stuff in your Programs & Features that also appears at your Dell Drivers & Downloads site. That would include any Intel, Realtek & Quickset64 drivers. If the site has anything that is a higher version, I will suspect that Dell Update isn't working for you, (as it never worked for me).
So far, as I said, every version you've got is equal to or greater than what I saw at your site - except for Dell Update, itself. And neither of us can download that one from our respective sites. Here was my previous comparison...
Dell Customer Connect: Not at site (my version is 1.3.28.0)
Dell Digital Delivery: 3.1.1002.0 << Site is lower
Dell Help & Support: 2.1.59.0 << Same at site (you took it earlier in this thread)
Dell Support Assist: Not at site (we've got same version)
Dell Support Assist Agent: Not at site (we've got same version)
Dell System Detect This one downloads when we click "Detect Drivers". I uninstall it afterwards.
Dell Update Application: 1.8.1114.0 << Site is higher. Also, v.1.7.1007.0 is there, under "Other versions".
Dell WLAN & Bluetooth Client Installation: Not at site under that name. I think it's part of another item there.
So, the site has nothing greater than what you've got for those. That's a good sign.
But where did your version of Dell Digital Delivery, 3.1.1018.0, come from? I don't know. It's not at the site. Therefore, if Dell Update took it in - it must get them from elsewhere. Or, could the lower version have come in & later self-updated, stealthily? Or, maybe, it came in from Windows Update before you shut that off - but would it look like that in P&F, then? I just don't know! It's half the reason I uninstalled my own Dell Update!