White Castle review: keeping to posted store hours

Planned on stopping at white castle on my way to my overnight job. I called to make sure it'd be open when I arrived. I asked what time the dine-in closed, was told at 11 p.m. 30 minutes later I arrived at 9:56 p.m. went to the door & it was locked. There was a couple inside at the window. I knocked on the door, the couple got an employee's attention but she shook her head & waved me off. I walked away & called back. Whomever answered said they close at 10 when they're short staffed. If I'd been told that during my first call I could've made other dinner arrangements... that was very unprofessional.