I can't stop/find download manager

[AC Question]

There is ALWAYS an app trying to download something on my phone, in the notifications list up top. If I disable it, I can't download another app on the play store because the entire downloading manager is closed. Once it's back on, it is downloaded the stupid stuff again, not my new apps. I can't find my download manager anywhere. It's
not an easy fix, "apps>all> disabled"
I have a galaxy note 2, please help