The question

After TV ad for $19 voucher for 3 hrs of cleaning was purchased, since I live outside the city, no cleaner wants the job. Several jobs have been scheduled and canceled by Homeaglow (no cleaner), I want to cancel the service completely. According to their terms/conditions, Homeaglow will charge my debit card (used to purchase voucher) $49 a month for 6 months. No work has been done so far. Can I cancel my card with my bank to avoid more $ going to them that have done no work for me? Even close my account?