Fuck customer service!

I can never do jobs that involve interacting with strangers. I worked for one day as a part timer at an expo.
I was working for a Japanese company and they were selling japanese snacks. Needless to say, I was a sales girl.

1st thing to piss me off...
one of the other sales..boy? calls me over because the customer is asking about the expiry date. we usually read
*DD-MM-YY* but in japan they read it *YY-MM-DD*.
The packaging said '2011-9' I looked at it and said it should be year then month.
She looks at me and said 'should be? so you're not sure?'
WTF is wrong with you woman??!!! is there any other way you would read it? 20th of november 2009? NO RIGHT? c'mon!!! you're older to me!! use your motherfucking brain!!!
But I just smiled and explained to her. I said it should be year then month. that's how japanese read dates. And she's still concentrating on the mudhafucking 'SHOULD'. Even I wanted to shoot myself in the head for saying it.
So I continued to to explain to her and said, "I said should because I wasn't sure if that meant it expired at the beginning or the end of the month." and walked away immediately. I have fucking work to do. I don't have the fucking time to explain this stupid childish nonsense to you.

2nd thing to piss me off...
we had a promotion to drop/raise all the prices to $3. And everything, no matter what was just $3. full stop!!
As I was telling it to customers who were walking by, this man probably in his 40s said, "So you mean EVERYTHING is $3?" I simply nodded my head and said yes, sir. He starts raising his voice at me and saying he was here the day before and bought a lot of the expensive stuff and how I cheated him and how I should reimburse him. wtf. i'm a sales girl. I do as I'm told. You want free stuff? You want an explanation? ASK THE BOSS!

3rd thing to piss me off...
I was promoting the shit out of the goods and the boss calls one of the boy to tell me that I wasn't doing anything. WTF??!!! fine. i ignored it and just did MORE promoting. He tells me to rearrange the goods to make more space for the newer goods. I did that WHILE promoting. I even helped customers as they asked me what the items were and flavour and whatever.

the last and final thing to piss me off..
I got fired.

and again, Fuck customer service.

*sorry for all the swearing. I've just been stressed and I've been influenced by luanlegacy from youtube <3*