By Callum Cuddeford & Susie Beever A pickpocketing victim has warned how he fell victim to a cunningscam, in which he even bought the perpetrator a pint by way of thanks. Roberto Mobile was enjoying a night out at an Irish bar in South London when a well-dressed man returned his lost phone. To show it was his, Rob punched in his passcode and bought a drink as a gesture to what he assumed was merely a good Samaritan. But when the phone disappeared again within seconds, the 53-year-old began to panic. His fears turned to horror when he noticed his bank account had been drained of nearly £10,000 …