Wrong information given regarding cancellation of

I took out a policy with Absa Life and everything was done telephonically. When the person handling the policy phoned me back to confirm the policy, I asked her how I should go about in cancelling the policy because I just heard that I have been retrenched. she told me the only thing I should do is cancel the debit order, which I have done. Three months later the debit order is still active. After numerous calls to the call centre I finally got through to someone who told me that I should have cancelled the policy with them (the call centre) in the first place.