Pointed out = he was told. Carl Froch ignored the advice and signed it anyway
I've done guest assisting before, I have told a guest that only 1 has been paid for when they've tried to get another once before. They proceeded to sign the item anyway. I've even pointed it out to the guest afterwards that they shouldn't have signed it and they said "it was my choice" What can you do? Rip the item out of the guests hands?
You were honest Kieron, tuck60 was not. The blame lies with him for trying, the assistant pointed it out to Carl that he had only paid for one (they didn't simply do nothing as you're implying), Carl decided to do it anyway. You are right to be aggrieved but as I said, I think you're blaming the wrong people here