Cancelling insurance a nightmare

So I decided to cancel my cellphone insurance since I have had it for more than 2 years. I called finrite on the 15th of September to cancel the insurance and I was told that they will process my cancellation. On the 25th the debit order goes through and I decide to call again now I am told that my insurance was still active even after I requested it to be cancelled, on top of that I am told that another debit order will go through in October. Very incompetence!!! I am so disappointed :(