IM get locked account

I had my other account (LordDrek) and someone logined and riot lock ma account, I tried to hook him back but I don't know things what riot want to tell them, like birth when im made account or first 3. champions i bough' . If some1 know how to get account back it will help me :( I hope i will no need something like {{item:3026}} to riot unlock my account hahaha
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