Data Billing Systems / Page expired error messages

After much difficulty over 3 days arround 20th October, I managed to establish the data balances <br> and we had over 1GB available. (1)<br> <br> Before I even logged on, I continuously encountered the message \your page has expired"on their portal.<br> <br> So we downloaded a few required files and had over 400MB remaining which we could not use as we were disconnected on the 3Othe instead of the 31st. <br> <br> However"