Nedbank not being transparent regarding insurances charged directly by themselves

re: Nedbank Insurance - P***05

I had insurance on both my credit card and cheque facilities,which i wasn't aware of. I had taken protection in case my credit card was ******. i was not aware of any other insurance - who implemented it, how it was so excessively high. In April this year (2018) i phoned nedbank to enquire and complain about the insurance on my current account i was told to send an email to nedbank directly as. I was told this was compulsory when i opened an account - I did send the email but as i have changed jobs and have no access to the old company email. But i sure they will give me this mail or the acknowledgement of the mail, should I ask. Despite have a balance of less that a thousand, over 200.00 insurance is being deducted. I am shocked and disappointed. As i was told that Nedbank cannot refund. but how can this be. where is the paperwork that I signed up for all these inflated insurance to come off my account. It shows how less a value we clients have. Im going to have to change my bank