the best thing to do is get hard evidence. I know someone in a similar situation; the driver is being abusing, lying, and refusing service for no good reason. How these people gets jobs being in charge of people I don't understand. Suffice to say, my camera is being charged ready for uploading onto a YT account. I'm not vindictive or petty, but with some people you cannot win by going through the immediate channels - you have to catch them at it for heads to turn.
What happened? That road looks residential, what he's doing down it?