No one likes treated abd in public

I was in store buying sweets, I had a certain lotion from shelves and I thought let me not buy it I mean it doesn't smell as good as I want, I did yes apply a bit on my fingers to smell it, well this stupid cashier asked me why do I return something I used, and I tried to tell he I used it on my fingers only just to smell it, oh boy this woman just imp**** that I am ****. When I ask her how sure if I am telling the truth and why would she think I am cheating or ***** her lotion the she cut it by asking me to PAY by shouting at me, as I didn't like that I asked her to answer me a if she thinks I am a ****, she left me on a counter for 15 minutes when I ask her colleagues no one had interest to me now I am \BAD GUY"no"