Family Dollar complaint: Closing before time.

I went too exchange some Tissue and wipes items items i bought a hour before closing. I took the item back within 25mins before closing. When i arrived the doors was already locked and the manager name Phil and a cashier was just looking at me while i knocked on the door. He walked away an after 8 mins or longer he walks too the door and say we are closed. I then proceeded too tell him you closed before 9PM and it wasn’t that time yet and he goes too say well i can do that. Also while i was looking for corporates number the cashiers comes out and i asked her why they close early and she goes too say because we can that’s why. When she walked out the door the time was 8:58 PM. Not only i was coming there its about 6 more people tried too go in the store also. I informed them that they closed before time and it wasn’t even 9 PM yet!!!