********** Debit orders being deducted

Worst experience ever I had a debit order taken off my account for R260 and I knew it was old mutual as I had existing policies with them ( Now cancelled). I called in the 02/10/19 to enquire what the amount was for and I was told it is a policy but that can confirm that the policyholder is different. How is it possible that an amount can be debited from my account and they can confirm it is a 3rd party. When I said I have no knowledge of this I was told to send an email to the complaint department or call them. I had to reverse the amount and pay bank charges for something I never agreed upon. I now also have to chase them to cancel something I have confirmed I never agreed to. Is this some kind of ********** activity or what. I want old mutual to reimburse my bank charges and also provide evidence when I agreed to take out the policy.