Telkom Prepaid Data Usage

Yesterday my bank loaded %GB +5GB Onceoff - (Expires in 31 Days) @ 07:36:26. (***). At 09h05 I Received a message that my Internet Access has been paused. "Either your data bundle is depleted or you're not in Telkom's coverage ad using a Telkom only bundle. Dial *180# or open your browser. Since I barely used a few MB's in the time that lapsed from 07:36 until 09h05, how is it possible that my Internet Access is now paused? I also notice that data depletes at an alarming rate. What is going on? I went to Telkom in the city, but they are absolutely useless.

Can someone please assist?