I hope that you get it sorted. Be persistent but try to stay
I used emirates to fly to Auckland (from London) in 2010 and honestly I don't think that I could have been more impressed (I didn’t take skis with me). My girlfriend came back on some other airline and she only got 20kg checked baggage and paid more for the ticket.
It sucks about the skis but 30kg (plus hand luggage) is still 7-10kg more checked baggage than most airlines.