Shady dealings

This is a shady company. I have had dealings with them before but didn't realize the Modus Operandi of this company. They communicate via email on the heels of the SADC Advertising company (they might be related - possibly) that offers a free listing. Unsuspecting of the fact that this is a different company, you complete the information form they send you and return it - under the impression that they are the SADCAdvertising company. They follow this up with an invoice in a month's time of thousands of Rand. When you phone them or they phone you, they point out that on the contract in very fine print (usually a couple of terms and conditions that we normally ignore), in letters, not financial/numerical value written in Rand. A friend of mine also received these emails and, after he had an argument with them about canceling the contract, as they call it, immediately after the call received a letter from some attorney/debt collector. They only have a seven days cancelation period!!! He went to the ombudsman to lodge a complaint.