Very poor service

Santam has been debiting my account even though i had phoned them to cancel the policy. They mentioned that they would re reimburse me for the days that were due to me but instead they keep taking my money. I reversed the debit order but some how they manage to go into my account. Why debit me when i dont have an insurance with you. I phoned them and they told me to leave a message with my details and they would get back to me. i haven't received any correspondence from them. Give back what is due to me.