My iphone 4 has been stolen twice in 2 months, help, i'm 15

Basically my first iphone 4 was stolen at my work by professionals! It was so sad, anyway my mum and dad decided to gt me a new contract, so they pay 40 pound a month! I went to London to see my best friend and my phone was pock picket id! Don't say I should be more careful but i didn't have it out and it was in a bag in a big bag! However this time it was took in a apple store literally, they wernt much help and my dad wants to complain! Should I be intitled to another from them, like its not fair. I'm on orange but I DON't have insurance as the price was so pricy what should I do I'm so sad…

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I've tried rebooting, airplane mode on/off, calling ##873283#. Nothing works.

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