One in five Brits (22%) have asked their bank for a refund within the past 12 months for legitimate items and services purchased, new research has found.While more than half (58%) of customers said they returned the money after realising their mistake, 36% ended up keeping the refund.Younger consumers were found to be far more likely to have filed false chargeback claims, with two in five people (40%) aged 16–24 admitting to doing so within the past year.