Family Dollar review: Employee threatening me

I walked up to the counter and asked the cashier if the ear buds that had been previously opened were marked down. He said he didn't hear me so I repeated the question. He says, I have no idea what you mean. I looked at the guy next to me in line and he smiled, then the cashier says, oh thats funny huh. How bout I take you outside and break your jaw. I yelled for the manager who was no help and told us to calm down. I walked out. Now I can get hold of anyone in the Family Dollar company anywhere. I should have had the kid arrested.