Help Mobile being blocked after wrong password

[bip_bip]

Dear,

my little brother was playing with my xperia st21i which had a password , after 20 times of wrong password, the device has been blocked.
What do you suggest me to do please, because I can not put my password , it only asks to answer a question I set ages ago and ofcourse I forgot the answer.
Thanks.

 

[bip_bip]

Please, can somebody suggest something in order to solve this problem?

 

[bip_bip]

Does it mean that there is no way to get it back?

 

[bip_bip]

I was advised to fix it with the sony companion.
So After downloading the sony_companion and openning it, my xperia doesn

 

[bip_bip]

Please, I need help with it

 

[bip_bip]

I am very disappointed with the sony support team, really!