Family Dollar complaint: Rude and disrespectful

I go to this store ALL of the time. This I’d the first time I have been disrespected. The homeless population is big on 9th street and in the general area. I walked in and the boy Arselo (Not sure the spelling) tells a homeless man he will not help him due to stinking up the place last time he came in. I asked the boy if he smelled now he stated no he did not but he threatened him when he refused him service. I asked do you ban people permanently from the store he stated he could refuse anyone’s service. I said oh wow ok I think you should not yelled and stated he smelled in front of all these people considering he does not smell now. I then stated what I needed he turned to me and stated oh I am refusing your service as well .l said based on what? He stated he does not need a reason. There needs to be protocols in place that protect the customers to be able shop. I was not being rude or disrespectful to him for him to refuse my service and he told me I could talk to his supervisor Angel and he acted disinterested to talk and said basically whatever he says did not ask question so there was not a fair chance for me to speak only get out of the store.