Upgrade nightmare

On Mon19/10/2015 I went to upgrade my cellular phone and contract from the current Talk200 to Red Advantage at the 4U Vodacom in GreenStone Mall. Overall the experience was rather pleasant. As I was changing my contract from one without a data bundle to one with, to accommodate my new IPhone 6S the in store man who assisted me recommended that he load on 1GB of data so not to run up a unexpected bill. As it is a new smart phone by Thursday 22/10/2015 that 1GB that was loaded had runout. Vodacom Call centers have been unable to assist me. Vodacom at The Zone at Rosebank said I need to wait a day for the data to be loaded, nothing happened.Greenstone Vodacom 4U the next day said the same thing, nothing happened. Today because the migration from the Talk200 to Red Advantage has not happened yet I have reached my call limit on the Talk200 contract and the phone has been locked. All of this has happened due to someone unable to do a simple thing like load another 1GB of data on the old contract! Now to have the call limit removed on the old contract seems even more difficult than trying to load the data, I just don't understand why Vodacom is so useless when it come to customer service!