It goes like this.. I was doing the Elemental Bonds quest chain .. All was going well (well, not really.. Got killed by Deathwing's fire twice without being able to do anything (you know how they put us in a tornado and say they will safely take us to the new destination; well, not so safely when you pass though fire) and afterwards the spirit flying mount bugged to 0%)..
All was going well until I got to the Deepholm part.. As soon as I clicked on "accept" on "Elemental Bonds: Patience" all NPCs (Therazane, the questgiver, everything) despawned and I was left there without anything to do .. I abandoned the quest (wanting to repick it), to the NPCs still weren't there .. The ticket response waiting time is like.. 6 hours and I really don't want to wait that much until I finish the chain
Thanks for reading