I'll summarize; Blizzard has special events, holidays if you like, and this week is one of them. Last year they added a new aspect to 'children's week' which allowed a choice of pets. Everyone got one or the other, and this year when things rolled around the expectation was we would be able to do the quests and get the other one.We are aware of the issue that is currently affecting the Children’s Week quest line in Dalaran which does not allow players who have completed the quest line last year to take part in it again this year. We do not currently have a fix planned to address this issue at this point in time.
Except it's bugged. Blizzard found this out Sunday, spent two days saying 'Wait until we do server maintenance on Tuesday', and then today announced that the bug exists and they are specifically NOT going to fix it until next year. The worst part is, to complete the in-game achievement, you need to have 1 of 3 orphans with you. Alot of players completed the quests with 2 of the orphans over the weekend, and expected they would finish with the northrend orphan. Unfortunately, thanks to Blizzard's decision, they have to wait a year to complete it.
Cue the nerd rage. Personally, I think it sucks, but I'm not going to slit my wrists over it. I think its a real black eye to blizzard's already-shit customer service.