Beware of Online Ordering of ADSL Contract

I ordered a 10mb uncapped month to month contract through the call centre. When the technicians arrived to install the product they brought with them an Explora. The online adverti*****t at the time did not specify that a 24 month contract was needed to get the Explora so I thought it was my lucky day. I am now emigrating and went to Telkom direct to cancel my account only to find out that I am on a 24 month contract because I have an Explora. How can I be on a contract when I signed no documents, they didnt do any credit checks to see if I qualify. This is a direct violation of the National Credit Act (NCA). No FICA/ FAIS checks done at all. Telkom Directs advice is cancel the contract get charged the penalty fees and then query the penalty fees after the fact and try and get them reversed! Pathetic service. What am I supposed to do now?