Vodacom trickery

Just wondering how many other South African have been ******* into yet another "great deal" from Vodacom. I was called by one of Vodacom's agents selling me a 20GB sim card deal for R199 which in itself isnt too bad given that one pays this much for 3GB. The agent confirmed that the data is transferable to other devices. Lo and behold that is so far from the truth! Despite trying various avenues and even lodging a complain on the Vodacom website I'm unable to transfer the data to other accounts!! This is ********** in my opinion as the customer is led to believe that they are getting something that they can use. And to trump everything these sim cards are only 3G which makes them very slow! Really expected a lot more from Vodacom.