Issues with debits after policy is terminated

I recently had my car written off and the claim was paid out. The policy was terminated because I did not order a replacement vehicle. Baffling enough ABSA is still debiting my account even when I don't have a policy with them. The Claim was paid in October last year, however, there are still attempts to debit my account every month. The amount they are trying to debit is 10 times the premium I used to pay. I reverse these, but it costs me a lot of money in bank charges. When I reach out to ABSA they either don't pick up my calls or transfer me to an activate department that never responds. Emails are not returned. It is just a terrible experience all in all. I would not recommend it.