I hate to hear that, but google doesn't ban your account for no apparent reason. Obviously something looked suspicious to them.. There is no clicking your own ads at other people's houses etc
I am so sorry to hear it. And you must try to mail to google and wait 1-2 weeks, if google never answer you, you can try to apply new account..
Happened to me too, very disappointing at first but you must learn from this experience. Leave clicking ads to the people who visit your site & not friends or relatives.
Its almost impossible to get back ur Account via a plea to Adsense. They normally never reply to their Help section.
I sent a letter as a plea for getting back my adsense account, they did send a reply but saying they won't put my ads back.
I don't think that this could be only the reason of invalid click. Since Google never pay anything for invalid clicks, your account should not be banned. There might be another reason behind it. Google may trying to keep only quality sites for their Adsense.