Unprofessional staff

This morning, I went to buy 3 items and 2 of them were overpriced, I then told the cashier that the prices were wrong. She sent the packer take those items with her and bring the price tags, then the packer was gone forever. One price tag was correct and the other was incorrect. I went and took a picture of the correct item that I wanted. When I showed it to the cashier, she was just not interested, as for the packer, she was pulling her face as if I'm wrong or impossible. I waited and waited for someone to override these prices. The attitude I got is out of this world, unbelievable. Why?