Well you can’t recover any item. Doesn’t matter if you deleted it, or if a bug/issues on blizzard’s side did. They just won’t take any responsibility for their actions.
What you can do going forward is one of two things.
Keep playing… Knowing you could continue to just lose your items here/there. Cause it’s happening all over the place… (I myself lost ALL of my stuff… it hurt)
Or you can wait until they fix these issues and choose not to play. That’s what I’m doing… I don’t like the thought of my time just getting deleted cause of some bug on blizzard’s side.