Shocking service!!!

I received several SMS 's within seconds of one another starting with I had 250 mg data left ending with amount of R1203 out of bundle costs charged to my account!! Seems incredible seen as all I had done for the past 48 hours or so was send and receive the odd what's app!!!! When I went into a Vodacom store they stared at me blankly saying they didn't know why it was so high I needed to phone vodacom accounts. The lady on the line preceded to tell me that vodacom is not responsible for my inability to manage my data !!!! My data management is not the problem!!! Vodacom needs to address the issue ! I am not the only one who has been affected!! I have been a customer for over twenty years and definitely won't be much longer if they continue with this shocking service and blatant theft !!!