As Christians, we need to be careful what we say and how we say it. Should you smite someone or point blank curse them this could cause a lot of damage. Not just to the person you are cursing or smiting but yourself in the end. Many call it Karma. Be kind to support agents, they are humans too and don't deserve abuse because something may not be working. It's not personally their fault. "Take control of what I say, O Lord, and guard my lips. Don’t let me drift toward evil or take part in acts of wickedness. Don’t let me share in the delicacies of those who do wrong." – Psalm 141:3-4