Q: rescue e-mail problem.

Hi. Go there If you forgot the answers to your Apple ID security questions - Apple Support

By 'account is blocked' do you mean that you've locked/disabled your account ? If you do : If your Apple ID is locked - Apple Support

If you don't have access to your rescue email address you will have to contact Support in your country to get the questions reset, see the 'If you can't reset your security questions' section on this page : If you forgot the answers to your Apple ID security questions - Apple Support

Try contacting iTunes Support and see if they can unlock it for you, there is a link to contact them in the first link in my above reply