Marketing violation

I was contacted by HomeChoice and was told that I Won a prize. I was told that I should choose between blankets a microwave and I don't know what else. I chose the microwave and to my surprise my account had been debited with R2200+/-. I immediately sent an email to cancel the order. I only got a response after I had gotten a notification sms stating that my order is in dispatch that I should reject the order (about 2 days later). Mind you from what I read on the website I HomeChoice will return the item free of charge should I choose to send it back. Now I'm on the phone with customer service asking them about this R2200+/- item in my house and was told that I had to return the item via post office. They can't do anything about it. But if the item gets lost or damaged by the post office I STILL have to pay for it. (I'm liable for the item till they receive it) I really regret doing business with HomeChoice. I won't be recommending them to anyone going forward. Will take my business elsewhere. Pathetic