False pretenses and hidden penalties NOT in agreement

I was sold new Matrix tracking via MiX telematix in March with information willfully omitted with false pretenses by the agent. I was NOT told there is an early cancellation penalty (Who even does this anymore?) and NONE of the documentation sent included anything about it. I would NEVER have switched if I had known this, as I knew I may have to sell my car shortly thereafter due financial problems. Which I had to last week, and now they want to charge me R3600 to cancel the contract? OR R1500 to transfer to another car? I got a call today from their tech people to remove the tracker to refit into the other car and I don't even HAVE it anymore. Even the dealership said this practice is totally predatory.