I agree that the delivery driver should know the area. I probably would've done the same thing you did...just not say anything, even if I wanted to. I have trouble being assertive, too, especially when I want something for some weird reason. I doubt I would've given the guy a tip, though. But you did what you did and cannot change that...I'd just say this is just another lesson in life and next time you will do what you think is right.