Should I report this person or let Karma run its course?

I can not believe that bimbo at Casey’s convenience store did that! I went in to get a Diet Coke. I have been drinking Diet Coke for over 30 years.
I get my Coke, go up to pay and as I’m checking out I take a sip….that is NOT Diet Coke. It’s regular Coke, and to me it’s like drinking pancake syrup with water. Just nasty.
So I told the clerk, a girl in her early 20s that it wasn’t Diet and I was going to go back and check it.
Just as I got to the machine she rushed in ahead of me, ripped a cup out of the cup dispenser and starts trying samples of “Diet Coke” vs regular Coke, telling me I’m wrong that it WAS Diet Coke, then told me no less than 5 times that not only is diet anything nasty, so is Coke and she drinks Dr. Pepper. She rips a sample of Dr. Pepper out of the fountian, compares it to Diet Doctor Pepper and proclaims the diet DP gross and disgusting.
She just kept on, insinuating that I was stupid, maybe a liar, and my preferances sucked.
I was, for once, literally speechless.
One last time she told me she NEVER drinks diet anything…. I stared at her in disbelief, then snarled “Well I do!!” And turned on my heel and stormed out.

Wondering if I should report her….