In this case, you may want to calm down and not get angry on the spot, as an emotional outburst could make things worse. If you feel the need to complain, you can raise your grievance with the store manager and give specific reasons. The store manager will investigate the matter and provide a reasonable explanation and solution.
If you find yourself losing your temper frequently or unable to control your emotions, it is recommended that you seek professional counseling help. A professional psychologist or counselor can help you understand your emotions and give you effective solutions.