This cab company would not pick us up at the National Arboretum and take us to the National Gallery of Art. I had called them on the phone, and the woman said I needed to tell her the exact address of the National Gallery of Art. I said I was surprised a DC cab company did not know where the museum was, and she said to me, "Well, you want the cab, not me, so you find out the address". I would have thought they could find the National Mall.