Data expiry changed again

It turns out every month now vodacom will continue to change my data expiry date. I slept on the 9th with 1.64gb expiring on the 25 Sept. I woke up 10 Sept with data no data and it shows it expired on the 9th. Again just like last month when my 4gb disappeared. The date was changed and the rest like the minutes, night data expires on the 25 Sept.

Rather than writing in every month I think my solution will be to port out because wow this is ridiculous now really