Old Mutual - 5 years wasted paying insurance!

I have tried many channels to get a response, I have cancelled everything i have with Old Mutual on the 21.10.2020 and on 06.11.2020 (i.e. due to bad service) i discover money has been deducted in full by Old Mutual, can you please sort this out besides it being unprofessional i really cannot afford to pay 2 insurers (i.e. as i have now a new insurer)