i feel cheated!

A pitiful-looking old man approached me when i was on my way to the neighbourhood coffee shop. He said he has lost his wallet and needed money urgently to take public transport. I was initially quite hesitant cos he sounded rather dubious, but since he only asked for $2 i thought i'd just give him the benefit of the doubt. HAIYOH.. after i picked up my lunch and was on my way home, i saw the same old man still lurking ard the void deck. It got me so upset! I dislike it when people take advantage of people's kindness. Perhaps from a more visceral point of view, the old man was really in need of money. If he earns $2 per lie, how many times does he have to lie? :*(