Misleading Trial

I subscribed to Showmax' trial, wanting to test the service. Before the 7 days expiry, I cancelled my trial. Low and behold, a week later I notice that Showmax deducted R100 from my bank account. After investigation I found out that Showmax created two subscriptions in parallel, one for the trial, and a billable subscription. I had to cancel both. From my point of view it is deception, however I can be wrong. I am however not happy with them