Data bundles disappearing

Vodacom, was supposed to load my 1gb last week friday (01.04.2016) as per the contract i have with them, they didn't! When i called them on sunday (03.04.2016) they told me that on their systems it shows that it was loaded. But I had been checking since friday morning and it was not there, instead I had the remainder of the 1gb bundle I had loaded myself a few days back.<br> <br> Today (08.04.2016) just 30 minutes ago I bought my own, and now its gone!!! Never had this happened before, no matter how I use my tablet, 1GB would never disappear in less than an hour. Something fishy is happening with my account, someone is trying to be smart and I will not pay for such nonsense! Fix this!!!!!!