Debit order set up when I didn't ask for one

I called Discovery Insure for a simple quote. They consequently set up my account to be deducted which I had not asked for. I later called to cancel this policy that I hadn't asked for. I have called Discovery at least 4 times to ask for it to be cancelled and nothing has been done about it. I received an sms yesterday saying my account would be debited even though I had called 4 times before to cancel this debit order. I am extremely disappointed and frustrated. This is ridiculous! When I called Discovery again today they said I should go and reverse the debit order on the 2nd of March once the money has been debited! So now I need to take time out to go to the bank and sort this out because Discovery messed up. This is ridiculous!