I'm a little bit upset what should I do?

I went on a date with my bf. But then suddenly he said that he needs to pick his sister up and said he would come right back.

I asked him if I can just go with him but he said I can't. So he just left me at the restaurant while he picked his sister up. Now he said that he needed to take the dog. What should I do? I've been waiting for an hour.