What a mess. Your surgeon will be on holiday, but they will have left one of their minions in charge and it is most unlikely their offices will be closed until February. Huge loss of income. Huge. Not likely. It is probable someone will contact you, but keep on the blower and keep asking.
Your GP can refer you to an oncologist in exactly the same way you were (probably) refered to the breast surgeon. There is no mystery about that--you can choose your own if you have a preference. The only thing that changes your range of choice is your health insurance status. If you have good cover, there will be stiff competition for your custom. If you have none you either go public or pay. The 'talking to two' thing is bullshit and deliberately mystifying what should be a simple process.
Don't let them jerk you around. A royal commision into the delivery of specialist medical services is long overdue.