Incompetence and bad customer service

On the 28th of February at 8-55 am and 09-28 am I called Old Mutual insure to notify and inform them of my intention to cancel the policy and when you call in you are advised that their calls are recorded. When I check my statement it reflected that Old Mutual attempted to debit of the 26th of March today on the 25th of April I made contact with Old Mutual to check if they have updated their records and if the policy has been cancelled as per my request on the 28th of February and I was told that the policy premium has been loaded for a double debit. When I queried this on the basis of my previous interaction I was led by lack of professionalism and intention to resolve my query and consultant insisted that that debit order will go off despite cancellation. I am lodging a complaint against Old Mutual for insisting to debit my bank account without my authorization/ approval and cancellation of the policy having followed due process. I wish to express my dissatisfaction with the service of Old Mutual and hereby request any form of intervention to stop Old Mutual from an ******** and unauthorized debit from my account.