Billing me months after I cancelled

Good day,

I have COMPLETELY cancelled my account months ago with Shaw Academy (yes, I did call in to cancel and yes I did cancel on my online profile).

I did one course with them and that is all I wanted. So now I am DONE, which means I do not need to be billed any longer. Makes sense, right?

I also sent in MULTIPLE emails to a Sheldon that assured me that everything was cancelled (for the 3rd time). 2 days after Sheldon promised me (again) that it was cancelled, funds were taken out of my account twice.

I received an email from Sheldon again yesterday telling me that he has RE-activated my account again. Do you see the problem here?

I am also guessing that I am going to have to pay once again because Sheldon reactivated my account after I told him to cancel it? Apparently there is a "cancellation period" where they still bill their customers after they cancel.

Absolutely pathetic company. How they still exist is beyond me.