Sonic Drive-In

Sonic on north military highway in norfolk virginia says open 24 hours. I went at two in the morning on jan 29 2019 and had a young lady at the front tell me they were closed. If they were closed why was she in the building and if they were not closed can you let me know what's going on? Im a very loyal customer and if they have enough money to turn away customers while they are supposed to be working then they don't need a job.