What is the best way to get a refund for services not rendered when the company is being resistant?

My daughter was pre-paid for a year at her dancing school. The year is up in May. We permanently left the dance studio in March. I have asked on several occasions for a refund for my April and May tuition. My first email was ignored. My second email was replied to stating that refunds go out once a month. I was not made aware of the time of month and it has been a full month since my request was sent to the owner. I sent a second email asking again, for the refund and for an indication as to what time of the month this payout is supposed to take place. I have not received a reply this time. How can I more pursuasively demand my refund within the parameters of my state laws without hiring an attorney or filing in the local court system?