Shopping that is not so Fun

So I went to M2 last Monday
yup.. it was crowded as usual even though school holiday's over.

You know how there are people selling bags and sandals on the floors.
You can see them just as you walk in the lobby, they're on the right and left side.
and some are stationed under the escalators.
They're definitely noticeable allright,
they'd walk around showing their bags and yelling " Handbags!! only around Rp.50k "

So I was walking with my friends
and as I was stuck in the human traffic jam ;p

and from like 10 feet away.
I saw a girl opening her handbag, probably getting her wallet to pay for the new handbag that she chose.
So this tall guy holding multiple bags in a yellow shirt, approached her with an unfriendly face
and he said to her "why did you buy the bag here ?"
"you were looking at my bags before, why did you buy it here ?"

At that point I had to keep on walking coz people were started nudging me to move.
so I didn't know what happened next.

But that was scary !!!
I didn't know there were an unwritten law of shopping conduct there.
If it were to me, I'd probably report that guy to the security guy.
I mean, as customers, We are allowed to look at stuff anywhere and then decide where to buy the stuff from.

I've seen shopkeepers got mad at a customer once when I was abroad.
she was mad coz the customer asked for the price but didn't buy the product.
hello.... can't people ask for the price ?????
I didn't think a similar situation would actually happen at M2.

But nevertheless, I don't think that one situation will stop people from shopping there ;p
so :)

Have you ever had a similar situation ?