Vodacom Apple SE Promotion

I opted for this promotion on 17/10 and Vodacom4u Musgrave never had stocks of the sound Box (odd for a promotion). Nerves the less I was promised that this would be forthcoming last week and although I have taken out a second contract for the SE, called on them and phoned I was told that it was on order and that’s it. It appears that the sound box will not be available as advertised so therefore I would like to cancel both contracts and return the Apple SE Phones as the contract has not been fulfilled.