Onair TV - MIS-LED to accept a 24 month contract

Looking at all reviews now for Onair on hello peter and other websites I am ashamed to say that I got caught as well by them. I was mis-lead by their sales consultant that for R79 a month I will get DSTV compact for 24 months. I received this sms - DSTV HD Single View Decoder Installed + 1 Month Compact Subscription with R5000 Life Cover, Rescue Box, Extreme Lifestyle @ R79 x24 Months.

This means I only get 1 month compact subscription. They are confident *********s. They delivered the decoder yesterday and arranged the installation today. I called and informed them to cancel the installation and to collected their decoder. I requested that they cancel all with immediate affect. Now they want to charge me cancellation fees, I did not even use their product. I now received the below response from them:

Please be advised of the following process: 1.) We will need to log for an internal audit/investigation of the sales call. 2.) Once feedback has been received, you will be notified. 3.) Should the outcome of the investigation be non-compliant, we can continue with cancellation.

Onair TV is this really how you guys do business?