Theft of Artime while data ain't affected

Dear Vodacom!<br> <br> Been using this service since 2007& As a student I don't appreciate you *****ing from me. I can buy 30 day data, on top of that buy power bundle, buy daily bundle, & active the Just-4-U Night Express....and still have some airtime left in order to fill up when the plans I have run out. However, you always bill my airtime & leave data hanging like that...not affected at all. At first it was with my R36 airtime, you billed me on that while my daily data wasn't affect, by the time I know it the balance was R0,02. I complained on your twitter services (@Vodacom, @Vodacom111)...they promised to call me & that never happened. That was a month ago. Same thing happened. On Wednesday I bought the 1GB night express because I was going to use it on my Vodafone modem to download a software for my laptop, following day on Thursday... i bought R10 airtime to make a call, I did and was left with R8,90. Then minutes later I bought R80,00 airtime using cellphone banking. I was gonna activate R79 1GB weekly bundle, it wasnt on the offers, decided to wait. End of the day, balance was R56. Following day its R24. Saturday morning I bought R55...still blah-blah. Now I have R1,24.<br> <br> WHY????