Bad Service and doesn't care about their customers

Very Disappointed. The company it's not to be trusted. Joined their Flexicare plus. Agreed debit date 31st or 1st. They didn't debit on Agreed day. On the 5th the debited successfully. Then on the 7th of April they send email of suspension. I called in for reason to.They mentioned never received any premium. I've send bank statement as proof and ask them to cancel and refund. Response was it's canceled but can't refund because the premium was for March. The month they denied received. Now I want my money back because you didn't debit on the Agreed date and I didn't use any service of your company. I need my R764 back.