It's not uncommon for game enforcement personel to be unfamiliar with all of the rules and laws, especially if they just got transferred over from the fisheries division or such. Not saying it excuses them, just that it happens.
Regular law enforcement personel are even less familiar with game laws. About twenty years ago my brother-in-law and I were shining deer with a spotlight in an area that we hunted. It is legal in Michigan from Oct 1 to Nov 1 only before 11:00 pm and there must be no firearms or bows in the vehicle. Someone who had built a new house down the road called the police. We're already sitting on the side of the road when the cop pulls up with lights flashing. He says, "What are you doing?" My BIL says "Shining deer." Cop says "Well, that's illegal." BIL says "No it's not," pulls the state hunting regs from above the visor of the truck and proceeds to read them to the officer. I was trying real hard not to laugh. The cop, obviously embarassed, says, "Well let me see some ID then," to try and save face. I'm sure whomever called the cops thought it was illegal as well.
Without knowing the game laws in your state, it certainly seems as if you didn't do anything illegal. With no calls in your possession, it would be tough to prove you were calling turkeys just by scratching in the leaves.
"The joy of living is his, who has the heart to demand it." Teddy Roosevelt