You had to let him out again to wander? At least you notified the shelter of his tag # so the family will be notified. That's why I also have name/address/phone # tags on my girls. In case a "civilian" finds them, they can easily notify me. I hope the sweetheart found his way home safely Thanks for trying your best to keep him safe and return him. I understand your frustration. Maybe you can call the shelter to find out more info.; maybe he was picked up again and returned to the family.