Smartphone app issues and lack of feedback

Two weeks ago I went onto the smart phone app, after finally getting it to work, to purchase date. At the end of my purchase i got a notification saying the transaction had failed and that I should try again and as I needed data I do just that and great it worked. However it then appeared that the initial transaction had worked as well so now i have double the data and costs. I called in to get assistance in getting this resolved and two weeks have passed with no fix, i called in again for an update and got told I cant speak to the person responsible for this but a comment will be put on my query, after that I got another SMS stating its being looked into. How does an SMS help me? how does it take two weeks to fix this? how hard is it to call someone back? <br> <br> Extremely disappointed in the service from Vodacom once again. <br> Query number is: S3-GP630-03E4H