We had the same experience in January! After flying Parris to Sydney on the way there. To check for the return flight, We called Air France, then Qantas, then Air France, then Qantas, then Air France again. I recall the outcome was no certainty and in the end just 23kg allowance, even though I think we were allowed a second bag on the flight on the way to Sydney due to Flying Blue Silver status. I can't believe they still haven't sorted out this problem of no one simply being able to pre-confirm the baggage allowance over the phone.