男子拿户口本在银行给俩娃销卡，被要求证明父子关系，银行回应

Group 1 - A man from Shaanxi reported that his two children were issued financial social security cards without his knowledge, leading to complications when he attempted to cancel the cards using their household registration book [1] - The man stated that the household registration book includes three generations, with his father as the head of the household, but the bank required additional proof of paternity to validate the relationship with his children [1] - The involved bank branch clarified that the household registration book only proves familial relationships and has communicated with the customer to find a solution to the issue [1]