Bad customer service from Assupol

I have tried unsuccessfully to stop Assupol from debiting my banking account for a Funeral Policy which I wanted to take out but then decided not to for financial reasons. I have sent them countless emails requesting them to cancel the policy but they are ignoring the instruction and continue deducting the monthly amount. I have even gone to my bank and initiated a stop payment but even that has not stopped it. I think their customer focus is highly lacking.