Shaw academy is a ****

I won a 4 week online course and was told to enter my bank details should I require to continue. I couldn't get past the page with out entering my details. The next day they deducted 499. I called and the only option on this call was to cancel. I then opted to cancel. I emailed them immediately and got frustrated after asking to be called. No one called. I got a response to say I purchased a certificate. First of all how can I purchase a certificate without completing the course. There is no number to call and the guy that emailed me was just rude and not understanding at all. Such a **** of a place. Quick to take ur money