Old Mutual *****ing money and poor service

I just want to tell everyone Old Mutual has really poor service and they like to keep on taking customers money even after they cancelled their policies. I've been battling to cancel a debit order from August 2017, that keeps on going thru on my account even after I have cancelled my debit order. The service agent keeps telling me it has been out to someone else and all of a sudden I can't cancel it as the other person has authority over it? Really how is that even possible? After months of e-mails backwards and forwards the debit order keeps on going thru and I've keep trying to convince this service agent that I've never signed something like this and has been insisting that they send me the contract but I don't have access to it and someone else has the authority! After months I sent him the contract that states that Old Mutual has cancelled my policy and guess what. The service agent tells me, I confirm that your policy has been cancelled and guess what debit orders still keep on going thru! So not only did they state my policy has been cancelled but no mention of the reinbur*****t of debit orders that went thru my account?