I was sitting my OCR 21ST Century Science C123 exam, exam invigilators took the phones in as they always do. So I give my phone to this older lady and she takes it, next thing i see is her putting it screen down on the bench (which already made me pissed) and to make it even worse she slid it across the bench with her hand on it. After the exam I inspected the phone and I see a bigass scratch going across my screen, i was leaving school by then so i couldnt do anything really. My question is, what can i do now?