My brother bit on the similar scam. "A deputy sheriff is coming to arrest you for missing jury duty unless you buy a Green Dot card for the $850 fine and call us with the pin number". Somehow the scammer in Atlanta knew that he did have jury duty that week but he had been dismissed because so many cases had been settled out of court. The scammer convinced him that he had misunderstood being dismissed. Luckily when he went to buy the Green Dot card the cashier knew it was a scam and talked him into calling the court clerk. .