117. If a contract does not comply with the requirements prescribed by this act or the regulations, any consumer may demand its nullity.
In the case of a contract involving credit, the consumer may demand, at his option, that the credit charge be cancelled and that any portion of the credit charge already paid be restored.
Furthermore, every contract contemplated in section 29 which does not comply with the requirements prescribed by Division III of this act shall be a sale with a term which transfers to the buyer the ownership of the thing sold.