someone locked my phone
Someone activated find my iPhone and my phone locked. I followed all instructions and made sure that phone is activated for my icloud account (my aunt was first user). There i could see that my phone is in locked mode. I clicked erase iphone and then i deactivated iphone from my account in order to perform hard reset (nothing else worked). But my iphone is still locked and I don't know what to do. Please help.
P.S. I suspect that someone hacked onto my icloud account so I changed password and security questions. When i turn it on it says: write to email apprestore05@***
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iPhone 4, iOS 7.1.2