Unacceptable behavior

I was making purchases with my daughter and we forgot one item. My daughter continued unpacking while I ran to get the item. The cashier left her till, when I returned the packer merely shrugged her shoulders that she does not know where she went. She asked another employee who said she could not work another person's till.I waited until I decided it was not worth spending my money there and I left the groceries at the till. She showed no respect for me as a customer or her job. The was not even an attempt to apologies.