Telkom and "Data depleted"_IMPOSSIBLE

I have a 20GB day data and 20 GB night data deal. I have not had internet access since Friday the 6th of September when I received data on the 1st of the month. Every day when I leave I switch it off and I am at work most of the day. Now on Friday both day and night data have apparently been depleted. I am trying to explain that there is no way that this is possible because on the 5th I had 18 or so GB of data. Now all of a sudden I have none. And even if I had miraculously depleted the day data, somehow they say I depleted the night data as well. Which is again impossible because it was mostly switched off. Then the lady who is assigned to me over the phone does not know what she's talking and she talks in circles until the phone hung up (or she hung up) and then I spoke to someone named Patricia on the online "help" site. She insisted data had depleted and sent me some nonsense data report that did not show a SINGLE thing. I asked her to explain and I have still not heard a response. I am beyond annoyed. Someone needs to respond and tell me what is going on!!!!!