The bottled LPG market is subject to general trading practices under the Federal Government's Competition and Consumer Act 2010 (External website) and falls under the jurisdiction of the Office of Fair Trading (External website).
The Department of Employment, Economic Development and Innovation (Mines and Energy) (External website) may be able to assist with disputes regarding these matters.
You have to give the bottled LPG supplier a reasonable opportunity to resolve your complaint before contacting the Office of Fair Trading or Mines and Energy.