Ok Google have blocked my site becauce that some one have klikked many times.. Why do the do that to their users
Many reasons. False traffic. Incorrect ad placement. Clicking on your own ads. Etc. Not to be prejudice, but you seem to be under 16, so Im sure it wouldn't have been hard for you to get banned. Also, it's $15, try not to worry about it too much. If it took you an entire year to get $15, you should probably do something to heavily optimize your sites. EDIT: If it's the site in your signature, there's no content there. That would make it AdSense illegal.
i wish you make $ 15 by some other network in less a year this time !! and if u think you are not at fault please mail adsense-support@ ... with detailed report !!