Disrespect to customers

I am a regular customer of Eskort located in Rooihuiskraal, I always go there for my biltong. On this specific day, the lady behind the biltong counter asked for my order and I gave it to her and she said my order is good, afterward the total was more than I asked for so I just asked her if she can take remove some pieces of biltong to make it an even price which she rep**** "if I choose a piece I am obliged to take the entire piece, I am not allowed to take pieces out" I then said it is a first I heard about this because this what I always do. So I think she just undermined me because my appearance comes forward as young looking and she saw the opportunity to treat me with disrespect. After this encounter, I refuse to further support Eskort in Rooihuiskraal due to the behavior of the staff.