Iclou disabled in ipad

i have ipad 3 wifi+cellular and it got disabled because my mom forgot the password. And then i recovered it but the ipad ask for iCloud email. She forgot the iCloud email and then i already contact apple support. They help me to find the email and i already got it. But i still have a problem that the email for the iCloud was my brother email and he already forgot the password and also the security question. I already try to contact apple support, they ask my brother 3 security questions but he only got one answer right and until now i still can't use my ipad. Please need help!!!!