Is Qantas = budget airline?

Published in ST forum 9 Nov 12.

LAST Saturday, I flew home on Qantas from Melbourne with my four-year-old child.
I had a single piece of luggage, which exceeded the 23kg individual weight limit, but was within the limit for two.
I had no problems about the luggage weight in earlier legs until the Saturday flight.
The Qantas ground staff insisted that I pay an overweight charge.
When I tried to explain, referring to the flexibility I was given on the earlier flights, he replied that he would charge me for those legs as well if I did not comply.
I had to scramble to find another bag to repack, and meet the 23kg limit.
Customer service on board the flight was poor too.
I asked three times for a cup of hot chocolate for my child at meal time.
It came 1 1/2 hours later, when hot chocolate was served to all.
As a premium airline, does Qantas not know how to care for the needs of the young?
Syndee Yap (Ms)

Not budget airline, but poor service that hopefully can be rectified.