Continued Billing After Contract Cancellation

Good Day, I completed a consumer request for contract and service cancellation form to cancel my phone insurance on the 14/02/2017 to be processed. It is now the 21/08/2017 and the account is still being debited and it is 6 months later. I called on Friday the 18/08/2017 to report this for the second time and I was requested to re mail the form, which I did. I have still received no feedback. I have wrongfully been debited for a service I cancelled for the last 6 months; I am a pensioner and every cent counts. This is unacceptable service and a lack of organizational thoroughness.