Unless your extended warranty was provided by the manufacturer, you would have no recourse, because the dealer is a separate legal entity.
If the warranty was provided by the manufacturer, you claim that the dealer was the manufacturer's agent, and that by accepting your money, the manufacturer is liable for the dealer's acts to the extent of an existing agency to sell the warranty.
Re the registration, the failure to pay the fees on your behalf, technically amounts to theft under Penal Code 484(a). The problem is that the police/sheriff frequently will claim that this sort of action by the dealer is "a civil matter," in an effort to push the litigation costs on to the injured party, rather than to use taxpayer money to try to bring the purpetrator to justice.
That said, you have nothing to lose by reporting the dealer's actions to law enforcement, because if they accept the report, then maybe they will prosecute -- especially if they discover more than one similar bounced registration check.
Other than that, you would have had to file what is called an "adversary complaint" in bankruptcy court to have the debt declared nondischargeable due to fraud. The problem here is that this would be a very expensive legal action, and the attorney's fees would far outstrip the $1,400 that you have at stake. So, it's probably not worth the effort, especially as the dealer probably doesn't have any money to pay with, even if you were to win.
Sometimes, there just isn't much you can do to get justice, and this may be one of those times.
Hope this helps.
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