Perhaps you should ask yourself this question:

"Should I read the TOS when I sign up for a service?"

Unfortunately, we can't really do anything for you as your problem is with Google and the resolution has to be arranged with them.

Fortunately, we have some great posts on things to do if one should find their AdSense account banned. If you were innocent and had not violated Google's AdSense TOS, there are some things you can do to try to get reinstated.

Please read the following threads for some good advice.

I've been Reinstated
[webmasterworld.com...]
[webmasterworld.com...]

What to Do When You are Kicked Out of Adsense
A tutorial on your recourse when booted from AdSense.
[webmasterworld.com...]

Good luck!
;)