Abrupt manner

How could Jet star hiring such a non professional employee. What is Jet star key services?
I had twice experiences with delayed flight, bad attitude. Both from the flight attendance crew staff and flight attendance manager.they talked to me rudely with an abrupt manner.
The JQ411 flight was delayed. I was boarding at about 12.15 pm. on flight from Gold Coast to Sydney.
Myself and my partner were sitting at the wrong seats
,once we realised that we quickly changed to our correct seats.Suddenly, a flight attendance named Cahile called out loudly to us said "you have to sit at your boarding seats." Where is your seats.?
My partner said . This is my seat.
Cahlie said show me your bording pass. I showed it to her she quickly snatched it out of my hand.
I felt that she was very rude and disrespectful to ward us. After she read our boarding pass. She was silent and walked away.
I was expecting and apology but there wasn't.
I said. Are you happy ?
Cahile said" Drop the attitude you are required to do what I said."
I said " I'm not gonna argue with you just go back to your work."
Cahile said. "Do you wanna flight do you?"you are required to do what I said if you want to flight. Do you want to flight.

My second thought that if I continued this she might refused me on board as she repeatdilly saying that.
I said " I'm not gonna argue with you this is mine seat can you o back to your work?"

Cahile said ."watch the attitude don't be rude to me if you want to flight.

This was the worst service I had been experienced in my life.

I felt that I was slapped twice on my face big time. I waited till the plane took off and approached flight manager named Sharon at 12.35 pm.
I talked to Sharon about the incident and read out my contemporary note to her.
Sharon said" but did you change the seats."
I said " I did changed to the correct one"
Sharon said" I see. I'm sorry I was not there I don't know what happen but I will talked to the crew."
I said " in your opinion do you think your crew should talk to the customer like this?"
Sharon said" I don't know I wasn't there. I know you are frustrating. I can give you a card you can make a complaint and they will investigate it. I have to continued service the customer as there are food and drink to be served. Excuse me."

I said "can you please write her name on the card for me can I have her full name?"

Sharon said" I can give you her name but not the full name we don't give full name. And sorry I have to continue service others.
What the.......?
Did Sharon forget that talking to me was a customer service too?.how can she appoint as a manager. She not even solve my problem. I was wondering. Have jet star had trained staff for services.