I do not know. What was your agreement? It sounds like you had the right to cancel. But they are going to dispute this. In the absence of a written agreement, it is your word against theirs. On the other hand, you may be able to report them to the Better Business Bureau or the State Attorney General. If there are other problems/complaints against this company, they may not want to push this. You can always consult a lawyer, but there is not that much money at stake, here. You might just refuse to pay them anything more and see if they come after you. If they do, you can let the judge decide.
Or you might take the bull by the horns and sue THEM in small claims court, for the return of your payment.
I guess you should do a cost benefit analysis and see if it is worth your time to mess with it. You might just decide it is a (hopefully not too) costly lesson, and move on.
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Verbal agreements are generally binding in Wisconsin. However, certain contracts MUST be in writing to be enforceable under the statute of frauds. Contracts that cannot be performed within one year must be in writing and signed by the party against whom enforcement is sought (i.e. you). In this situation, a 5 year subscription cannot be performed within one year, but the payments arguably can. Your partial payment further complicates matters.
I would suggest reporting the company to the Better Business Bureau.
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