Disappearing airtime!!!

On 29/04/2015 I had a total of R 232-58 airtime as well as a 250mb databundle. On 30/04/2015, busy downloading a game, I received a message at 10:16 that I have 5.00mb remaining and at 10:19 that bundle is depleted, I immediately phoned *111# and tried to purchase another data bundle, upon which I was notified that my airtime is depleted. I was in the mall so I went straight to Vodacom, but the cue was long and moving slow. I then left and decided to phone customer service where I was informed that the airtime was depleted at 12:00 the evening, but they can not tell me why I need to go into a branch. I went to the branch a few weeks later just to be told they can not assist as they also do not have access to view this. I again phoned customer service, but this time they said the airtime was used for the download, I informed the lady that this was over R 200 within 2minutes and she just said yes. We all wish vodacom downloads are this effective!(The game never completed downloading...) And I have to pay R 22 for them to investigate what happened. Can't wait for this contract to expire!!! Cell C here I come!