Dreadful Experience when taking out a new contract.

Absolutely dreadful experience taking out a new contract at Vodacom. I went into a Vodacom store to take out a sim only contract that came with an additional 50gb anytime data per month as part of a promotion. The next day my sim is activated and I immediately notice that the data balances show that they have given me additional night owl data instead of the anytime data as promised as part of the promotion. So I give the store a call and they say that everything has been loaded correctly and that I should wait for the 1st of April to see if everything is correct. Not happy with that response as I don't see how it will magically correct itself, I phone customer care who tell me that they cannot help as the contract was taken out in store and not online... excuse me but does each store in the country run on it's own system then and not interact with each other?? So I give it a day and call customer care again - note that this is the 3rd time I am calling - and this time the consultant tells me that they can see the mistake and they will log a ticket with the technicians who will correct the error. They say this will take between 3-7 days. So after 7 WORKING days, I call them back and lo and behold, the technicians have left a note on the ticket saying that all is in order and nothing was wrong, however I am still seeing extra night owl data instead of my anytime data - it magically did not fix itself as suggested. So I argue with the consultant about this who reluctantly transfers me to another service desk? I then have to explain my issue again and yet again the consultant tells me they will log it with the technicians. Now you can understand that I wasn't exactly hopeful with this, and yet again the next day I get a call with the consultant saying the technicians have said there is nothing wrong. Clearly something is wrong or else I wouldn't be complaining!!! Please Vodacom sort your technicians out and make sure a customer gets what they paid for! It's now over two weeks since I raised this issue and there is no resolution in sight. Cancelling might be the best choice