continue debit my account after service cancelled

In November 2015 I cancelled the service, while on holiday in December I received an email refusing to cancel the service, I never saw the email until searching for the cancellation notice today after seeing my account being *******ly debited on 1 Feb 2016 by R465.16<br> What I consider unacceptable is that there was no follow up or any attempt by Netstar to act on the cancellation notice. <br> I want the service cancelled, the funds returned, and assurance they did stuff up my credit record.