TotalAV - Refusal to cancel my subscription

I would like to stop my paid subscription at TotalAV and have sent twelve emails since October to request that. They reply and try to convince me to stay on and block me from ways on the app and the website so that I’m unable to stop my subscription. They continue to withdraw my payment every month after they had repeatedly received all the necessary information to stop. They are currently withdrawing those amounts without my permission from me as I no longer want them to do that. Unfortunately there is no way to stop that from my side. Their customer care is non-existing- they just try to keep me as a client against my will.