where is my data?

Today the 1st I normally get half a gig on my one line I have with telkom. But this morning I went online to myunisa only to get a message saying I am out of bundle? Normaly I don't even use the whole 500mb for the month. I phone the call centre and as usual no help. I spoke to Nontle, @7:56 and was promised a call back but I am still without data. I did not pay for January yet, I normally pay a bit late but this is unusual. My case number is ***1. Telkom seems to like bad reviews and I am an Unisa student..Does that not say how much I need my data?