[UK] My 11yrs old sister has been scammed through tiktok

An 11-year-old girl was scammed via TikTok when a copycat account of her school friend sent messages requesting codes, leading to a £200 phone plan charge. Four other school friends were similarly scammed, and attempts to seek help from O2 and Boku (a payment service) have been unsuccessful due to non-refundable policies. The poster is considering contacting Sony for assistance.