Family Dollar complaint: UNPROFESSIONAL PLAYING A VICTIM YOUNG EMPLOYEE

I will not be coming into store nor ten other family members due to a young unprofessional young employee by the name of Stephanie.
Briefly, My sister and employee got into an argument two months ago because employee was upset she had to price check and take off a few things from a large order. I was not present but heard things got really out of hand. Darnell completed the transaction and walked customer to car and apologized.
My sister came into store at least seven more times since and no one said a word. All went fine.
Fast forward to today and upon entry. Stephanie yelled my sister was not allowed to come into store.. however, NO ONE has EVER told her this the seven times she came in prior. Cops were called and reports filed.She portrayed victim but overheard telling employees that she would stab, beat my sister ass and hit her with a hammer. I witness this and NO one said a word to her. It was an unfortunate argument two months ago. She has behaved on numerous occasions UNPROFESSIONALLY!

Please email back.. Again. we have been customers since 2001 and the employee is 22.
This is supposed to be a friendly neighborhood store and its nothing of the sort.
I was embarrassed and appalled.. she threatened us as none of us was made aware at any time in the past two months that she so called could not come into store….

Awaiting a response!
Thank you