Would you call it as a rude behavior which occurred to me at 7/11 in BKK?

I went to this 7/11 shop in BKK for my breakfast.

I picked up this "tuna sandwich" and gave it to the working girl at the cash counter for toasting it since it was frozen. Cost 27 baht (point to be noted.)

I got busy on my iphone. The lady kept standing there and staring at me.

Then, I asked her what happened. Why were she not toasting it?

She said "money first then she would toast it".

Really?

I'm a foreigner if I could afford my air ticket then of course I could afford to pay 27 THB.

I felt embarrassed, to be honest, by this incident. I felt like I was poor and could not pay 27 THB.

Your thoughts, please.

Added (1). Rat, forget about everything… Tell me why you have blocked me?
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