and you tell me no I will leave when I feel like it, you are trespassing and I will call the police. Same thing here, you may have entered while they were still open, they told you they were closed and to please bring your items to the front, you refused, at that point you were trespassing. You are lucky that they did not call the police and have you arrested or at the very least trespassed you (which means they get a court order prohibiting you from entering the premises again).