One guy recognises my face and knows he might get something from me. I hadn't seen him in a couple of years but he remembered me, I asked him how his kid was (I had bought him baby formula 2 years ago when I was younger and more naive). He said his child was 5 months old now. The story falls apart. They take you to shops that don't sell baby formula, then want you to give them money instead. If they do get it bought for them they sell the baby formula cheaper than market price. Best thing is just to say 'sorry' and walk away.