Family Dollar complaint: Disrespectful, insubordination,cursing,going after the 2 older workers

I shop in this store everyday, 200-300.00 a day.
I was in the store ruffly 3 weeks ago when a cashier, not only cursed out the 2older woman asst.there but, also threaded them.
The same day after witnessing this disrespect,he then when I approached the counter. I said to him that I thought that he was disrespectful,and the language that you used around children was not appropriate. He proceeded to tell me mind my business,cursed at me the f word and told me to get out of his finger store then proceeded to call me a bitch.
I was in there again and found out that one of the older woman left because of him. This time he went for the other woman( older) and was talking to her badly. The other older woman who quit said she cannot trust this situation that is very harmful to them both. Now I ran into the woman who quit, and asked if she was ok. She proceeded to tell me that she did not want to quit but she refuses to work in an environment that is non professional,but hazerdist to her well being.
I as a customer has gone to the police ,and yet he is still working there, and the woman that quit, did her job very well. She is very good at what she does and the dm refuses to take her back, and never did anything to him. How is this possible.