***** and Unauthorised Deduction

I signed up for a free trial on Shaw academy that I did not utilise. When I tried to cancel, the steps were much longer than signing up. I called the call center, when I add my student number it says it does not exist even though I was staring at it on the computer. I extended the trial so that I can avoid being charged until I figure out how to cancel it. I tried again and still nothing. They the charged my account without my permission or even a notice email leading to the day of the charge. When I call them this time with the same student number it miraculously goes through. They have cancelled my account but my information is still on their system and they have not said anything about refunding me. I want my refund and I want all my personal and private information to be deleted from their database immediately