Manager bumped me off flight 'cos I was angry

Summary of Problem:

I had booked a domestic flight Sydney to Melb. I was unknowingly on an international flight - Sydney to Melbourne. How on earth is that 'international'?. That meant $70 in baggage as I had more than 100ml of liquid in my backpack.
Attitude from Christine on customer service desk:
Not our problem & pay up ($70 or $100) - take it up with Expedia (who I booked with)
WHen I was angry about this: manager - without speaking to me - deleted me off my flight because of my 'attitude'.

1. 2 days before my flight, I get a text to go to international section of airport. I thought this strange as my expedia booking said nothing of this.
2. WHen I arrived at the check-in counter - I asked the service officer why I was on an international flight and wasn't told of this when I booked as it affects my bag (I have liquids in my bag more than 100ml - so bag needs to be checked in). She directed me to the 'customer service' desk.
3. I told CHristine at 'customer service' I didn't know my flight was 'international' and was told I needed to get my one bag checked in (backpack) which would cost $70. My visa had been shut down due to suspicious fraud activities - and I only had $50 on me.
4. I said I didn't want to pay the $70 and had planned to take my backpack on board - so she said I could pay for another flight for $100. Other than that, she said to take it up with Expedia.
5. I was angry but kept my cool - saying that I had studied law, Expedia was in fact their agent and they were responsible for fixing it. SHe said no, I was wrong. Christine then told me she too was studying law and it's not Jetstar's problem..It was my obligation to have my itinery (it was at home) and because I didn't have it on me, she couldn't help me. I then told her she needed to study more law - to which she said 'excuse me....how dare you'.
6. I then asked for her name and she said 'yes, you can take my name' and I wrote it down. SHe then complained that I wrote down her last name (said I was breaching Privacy Law) and she wanted the piece of paper back. I then gave it back. I asked to speak to her manager.
7. Robbie, her manager, walked up to me and without asking me anything - he said he had listened to the last few minutes & because I had been argumentative, he had bumped me off the flight and I'd have to get another airline to take me to Melbourne. He said he doesn't have to deal with people like me. He didn't even ask me what was wrong.
8. Robbie said I had breached their customer code by my attitude and breached the privacy laws by taking her last name. I asked exactly what I had said that was argumentative or breached the code and it was 'you need to learn more law'. He then said because I hadn't stepped away from the counter when he asked, I was breaching another code.
9. No swearing involved at all and whilst angry, I kept my cool. Apparently that's enough to be considered breaching their protocol. I asked to speak to Robbie's manager but he said there was no one above him.
10. In tears, I called my husband, a barrister who calmed me down a bit. After a few minutes an older man came over to speak with RObbie & Christine - and I asked to speak to him.
11. In short, I got my flight transferred, that they always have problems with expedia but they're covered by all the clauses in the agreement to give me no rights. That's not what my husband said, but that's the story......unbelievable!!!!!!