******* debit order mandate

I have cancelled my policy with MiWay in June before the premium went off as I took another policy quote with PMD just days apart. In July they debited, I reversed the debit and reached out to them on email again numerous and on whatsapp too. They called to.retain the policy, I refused but they still didnt cancel, now end if August they debited again and U reached out in whatsapp and they said my policy is still active on their side, despite all my attempts, they even went and update the debit order mandate so I cannot reverse it, but have not called to cancel and reverse their policy, now I'm paying for 2 insurance policies, they're no longer responding me on whatsapp and have not called still to have the cancelation on record as alluded. I want my premium reversed and the policy cancelled with immediate effect. It's ******* for them to reinforce a policy I have expressly cancelled via different channels.