Not to blame the victim, but this is an apt example of social engineering at work. The so-called 'educated' person in question is not too aware I guess. All the banking institutions send you a gazillion emails about not sharing your card information ever with any employee. In fact it has come to a point that the government of India runs TV ad campaigns regarding this on all the channels under the sun. So the ignorance of the victim is to blame for this as well.