Billed for an order that was placed and cancelled on the same day.

Homechoice is absolutely pathetic. I am settling the account and will never ever order from them again. I placed an order on the 12th of December and due to an error I requested that they cancel it. Guess what?? The courier pitches up with the order on the 16th and I requested that they return it. They have billed me for the order and are failing to have it reversed on my statement. The *********** consultant dealing with the query tells me that as soon as they receive it back they will credit the account. My question is, why was the damn order dispatched when I cancelled it the very same day the order was placed. I want this attended to immediately!! I will take you to the ombudsman. Instead of resolving the query they get there useless unprofessional consultants calling for a damn payment which I can't pay because I dont know what my correct installment is. I dont want any of you people calling me. I asked the consultant Ncedo Mooi numerous occasions to provide me with confirmation that it was cancelled and the account credited or reversed. I have an email trail from the consultant who tells me I must send another request after the account is paid to have it reversed. I would like an urgent response and confirmation on email address ***. please do not contact me telephonically as I am unavailable until 7pm tonight.