MoP Pandaren starting area bugged?

So my friends and I starting out the Pandaren race for the first time yesterday, and things starting out fairly smooth. After a while however, we outleveled the questsin the line so we had to look around for them. Eventually we came across the 'Missing Mallet' quest and it seemed bugged so we abandoned it. Later I checked online and it was a pretty vital quest in the line.Now when I went back to the questgiver, the quest was no longer available and hence we are now unable to continue. Does anyone know how to fix this? I got my info from this site: http://wowwiki.wikia.com/wiki/Wandering_Isle_quests

Any help is greatly appreciated, thanks