Data problem not solved

Hi,<br> <br> I have been contacting the customer help line for over 3 months. I purchased a 1GB x 12 month package for my mother who is a 65 yr old pensioner. She logs on in the morning to go onto facebook and commmunicate with her kids in Australia. She then logs off, and might log on again that evening. The modem is not on during the day, yet 1GB get depleted in 1or 2 days. I have disabled all downloads, and have downloaded a data monitor which shows she is not using the data you say she is. I have sent through a screen shot of the data in question. The REF # we were given was A6-X9Y1-AV2RY. I have had to load an additional R400-R500 so that she still has airtime. This is ridiculuos and no one has even bothered to respond to my query for months!!