It's hot

I like the heat, but it makes everyone irritable. Me too.
So I'm in the window, and I serve the order, I can't see it now, it's a mcdub and a small fry! I hand it out, she says she had a coke, and it was hot. I told her I didn't see one on the screen (nor did I have an extra coke lying around,) in a foam cup she had said. (foam cup drinks/special stuff like that is highlighted in yellow on the screen, and there was no yellow in her order).
So I ask for the receipt. Ahhhh the receipt. Anyone with one has all the power, they hold all the cards, and no one wants one.
That machine always spits one out when we cash them out. The cashier always hands it to them with the change. If the fools didn't get change, and drove off/rolled up their window, then shoot they don't/can't get one. There's almost never an instance of a customer not getting one if they had wanted one and waited for it.
So I never believe them when they say 'she didn't give me one'
that's horse shit.
So this lady says "I didn't get one."
Bam. I'm steamed now. I turn to a coworker to get someone to re-print it out for her. (I've done that before, for some teenagers trying to swindle a large fry.) The customer says she'll pay for one.
"It's a dollar-eight."
She throws me some change and a dollar. The drink machine is full of drinks, the screen is full of orders. none of them a large coke.
I'm waiting for a coke. She is goin on a tirade.
"you guys never get my stuff right."
"It's always wrong."
"I'm here everyday."
I think she directed some at the manager behind me. "You need to get your crew together. They never know what's going on."
We frikkin bust our ass everyday. And these assholes walk all over us. It's fucking stupid. I'm being paid in peanuts to give her good service, and I'm not getting tipped so my only obligation to be nice is minimum wage.
fuck her.
"Ma'am, have you tried going to Wendy's?" I blurt out.
"NO! I LIKE McDonald's!" she says.
She goes on to call me something something stupid little faggot.
"Well that's uncalled for." I say.
blah blah blah well you should be more professional/business-like.

well shit you shouldnt be a bitch.
Eventually I get one around, pour it into a foam cup.
She promptly pours it into a mason jar. Wait what. Why did she need a foam cup?
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
I smile. All over.

Because I pretty much told her to eff off.
I decided to bring attention to myself, so I slammed the window. I had a nice relaxing day.

Later, the drive thru order taker next to me told me I was very polite normally. I am. I was.
I am just having trouble bending over these days. due to a little something called divine intervention.