Master Care complaint

November 2016 I reported a faulty tumble drier. Master Care could not find a technician in Lephalale, our nearest town to fix the appliance. During December they assigned a technician from Mokopane. He could not repair the appliance because of a faulty PC board. After this I decided to stop my membership at Master care in January 2017. We privately took the tumble drier to a technician in Lephalale, and they fixed the problem ( R 1730.00). Since then Master Care is still deducting the installment each month. Each month I have to go to my bank to return the payment. With every transaction my bank costs is R75.00. I repeatedly send email to confirm that they must stop my policy with them.