Legion Threat: The Necromancer turn in bug

Ill try and keep this simple, ive been completing allot of the old expansions quest lines for transmog/mounts/pets etc and i find this quest Legion Threat: The Necromancer on Deliverance Point given by Khadgar… simple turn in is Dalaran over the Broken Isles, i land at Dalaran and head to the Violet Citadel… this guy is no where to be seen !

The quest hand in on the map has him on the stairs, yet i dont see him.

I opened a ticket with Blizz to report this and it was closed in 30 minutes with the blanket response

“Customer Support does not provide game hints or restore items, currencies, or progress lost due to bugs.”

Can anyone cast thier minds back to doing this quest line, did you have this issue, how do i get round it ?

I have the same issue here

Edit: On a priest im lvling at the moment

Is anybody from blizzard reading those forums? I saw a lot of same cases from another players and no one comment that. Also those reports were closed without results. It looks like quick fix but its a months when the bug still exist…
I have spend a lot of hours to get class mount but im stuck with mind that I loose so many hours in legion instead of have a fun in war within…