I had such a weird one the other day. Client books, parks and I give him my house number and directions. He knocks on my front door, as I'm coming down the stairs he opens the door! Granted, an oversight on my part for not locking the door but I was fuming. Very close to turning him away.
His excuse was that there were lots of people around on the main road, he'd gone through the alleyway by my house where you can't be seen from the main road. I was not impressed and definitely won't be seeing him again.