My original account has been blocked for 7 months HELP!!!!!!!!!!!!!!!!!!!!

So i have been hacked to my original account (im using my secondary which is new) and its asking me to answer a questionaire which it asks my name year and all that stuff. and i have done it for like 10 times and i still dont get my account back. i might answered some questions wrong because i made the account when i was 10 years old, and i had to put that i was born in the 60's to get the account, and i dont remember what year and month i putted in the information because i was putting a random one.I have lots of games in steam that i cant acces until i get my account back!.Its really frustrating becuase i have lots of important files that i saved. PLEASE HELP!!!!!!!!