Not happy with the cashier atLFC karaglen

The cashier at karaglen she is very rude I was in the Quee waiting to buy because I was using cash the lady call the lady that was at the back of me to serve her and I was the first one at the Quee with out asking me first if she can assist that lady or not next time just notify the first Person can I assist them or not instead of calling the next person we don’t care if u know dat person or not but they must be professional at all times