Disrespectful

Standing for about 10mins in a line.... Someone else makes her own line on the other side of the shop.... And 2 people stands behind her.... Knowing full well iv been standing there first.... The cashier says next customer and the lady who made a line AFTER me goes... This happens for about 3 times.... Im standing Infront of the cashiers and the blatantly ignore me... So I put my basket down and walked out... Extremely disrespectful and disgusting