Twice I was told to turn right into "No Entry" streets (one marked Police Vehicles Only). Twice I was told to turn at roundabouts that didn't exist. I was told to turn left when it was forbidden. I was told told to take the fourth exit at a roundabout when there were only three. Finally, I was told to take the exit at a roundabout when the road I wanted continued round to the left. As a result, I was 90 minutes late for an important appointment.