I was shopping in Sainsburys this morning with my 3 year old ds. At the entrance there was an unmanned taster stall with some crisps in tiny bowls and some Robinsons squash in cups. My ds asked if he could have some juice and I helped myself to a cup. The stall holder came along and said you dont just help yourself to the samples. I was embarrassed and apologised. She then continued to reprimand me saying this isn't a cafe you know and tutting. Was her reaction over the top? Surely the point of the sample stalls are to promote the products rather than tell customers off for sampling. AIBU if I report her to customer service?