I just called the restaurant asking for table for ...

I just called the restaurant asking for table for two and the lady hung up on me. So we walked to the place and requested the hostess for a table and also mentioned that someone disconnected the phone in the middle of our conversation. No acknowledgment. We were asked to wait for 15 min. It was clear that the hostess had no intention of seating us and said very rudely 'I cannot ask people to leave.' At which point we left. I was shocked with her hostile behavior. I am not sure why this restaurant is still in the hospitality business.