Car crash
Victim: "Hello?"
Troll: "Hi, this is the person who owns the red Mazda you hit yesterday?"
Victim: "Excuse me?"
Troll: "You left a note on my car. You hit the side of my car in the Shop Rite parking lot? Thanks so much for leaving a note - I know so many shmucks would just drive away."
Victim: "No, I'm sorry, I didn't go to Shop Rite yesterday. There must be some mistake."
Troll: "But this is the number that was left. Look, man, my car is completely ruined. I took it to the shop this morning and there's at least five thousand dollars in damages here. I can't even drive it for three days."
Victim: "I'm sorry, but that really wasn't me."
Troll: "So you're changing your tune now, eh, Mr. Good citizen?"
Victim: "Look, I'm going hang up now."
Troll: "Don't worry - I'll be right over to talk about this. Good thing you left your address too!"