I too am inconvenienced and disappointed with CitiBank's decision not to honour some transactions. The ATO doesn't consider income from CFDs gaming, but income, so why shouldn't Citibank take the same view.

However, what's particularly annoying is that before applying for a CitiBank Gold card I checked on two separate occasions that they processed transactions with IG markets as purchases rather than cash advances. On both occasions I was assured that they were purchases. Seems that Citibank has no idea what its doing.

Needless to say I won't be sticking with Citibank, but going elsewhere...they can have their useless card back.

Regards Ray