DISAPPERING DATA WITHOUT USING INTERNET

I am a prepaid customer and recharge with 20 rand with the intention of converting it to a daily bundle. After loading the 20 rand air time and converting to data I tried to access the Internet . I could not gain access on the Vodacom Network and was stuck on authenticating. Eventually when I succeeded in accessing the Internet I received a message that I am out of funds. I phoned the call center and was informed that \the Internet took your data"it does not make sense that Not being able to connect to the Internet I lost all the data. The operator could not give me any detail as to what used my data that I could not use because I could not access the service and her explanation that the Internet took my data does not hold water. The automatic updates is disabled on the computer on which the ****le is use. I would like to know how can your data disappear when your can not access the Internet. N S L van der Merwe"""