Data not loaded

Once again. Not sure why this happens to me, 2nd time around.<br> This time I converted R49 to a 500mb bundle, and yet straight after I checked my Balance, and 0MB. <br> And please tell me how it is possible to use 500MB In 1minute. Then <br> so extremely frustrated and annoyed and disappointed, not the first time this has happened.<br> Better sort this out!