Account that has been blocked - *** Email address is removed for privacy ***

I CAN NOT UNBLOCK IT. DON'T 'HELP' BY SAYING RESET YOUR PASSWORD. As i can't, as I've said. I cant use the security code, i cant fill out the questionnaire. I haven't even been told as to why my account has been blocked and personally find it ridiculous as its my second account to get blocked. 

This account is linked to my xbox live, and due to Microsoft new security proof on xbox live meaning you have to sign in to your Microsoft account before you can connect to xbox live, i can no longer use my xbox live profile. Which i am seriously annoyed about! All my game profiles, GAME ADD ON'S WORTH OVER £100 IN CONTENT, £40 worth of membership!, rep, achievements etc. etc. So i refuse to just let this go, and allow it to be blocked for no apparent reason. 

So, dear the person to answer this or 'help' me. Please explain to me as to why my account was blocked, and then unblock it. Otherwise, Microsoft can pay the £140 or so that I've spent on that xbox live profile. 

Again, that account blocked it *** Email address is removed for privacy ***

Cheers.