Same thing happened to me last Saturday, I had gobbling all morning and managed to call a couple Toms in to about 40 yards but they hung up, just stopped and looked for a long time.
Morning passed and it was a little after noon so I decided to relax, got off my seat and had a snack, well while I was resting my eyes three Toms decided to check out the decoys, I peeked out and I got birds at about 5-8 yards by the time I get up, get my bow and in position the birds are about 15-18 yards I shot thru the breast feathers on the lead bird, I didn't know Turkeys could jump that high.