DATA TO INCORRECT NUMBER BY STORE SALES MAN, 2 MONTH LATER - NOT RESOLVED. IMPOSSIBLE TO GET HELP.

On 18 July I went to The Grove Vodacom store to buy the 1gb x 12 months prepaid package for R899, when I got home I realised the sales person entered the wrong number on the package so the data was never loaded. Called Vodacom immediately and went to the store to get the package on the correct number, they transferred the 1gb for that month to the correct number the next day, but on 18 August it was the same story, no data. Went to the store again and got told they need to log a query to IT, after numerous follow up calls(at least 200 rand in airtime), bad service from call centres and going to the store 5 times since this issue is still not resolved. Every day when I call I get promised that it will be resolved TODAY, so this issue should have been resolved 30 times according to Vodacom. This is a simple issue that has taken two months to resolve so I don't want to know what happens when there is a contract issue, will definitely remember this when I need to get a new contract for the 3 packages I have with them. When will I get the data I paid 899 for?? Or give me a refund!?