Airtime and data vanished

on the 14th of April my phone ran out of +- 500 mb of dat from browsing Facbook in less than 2 minutes i then turned off all the apps that were turned on under \cellular data\". i got to work and while I'm there I'm always on wifi. around 13:20 i recharged for R29 and i also bought data for R29. moments later i made a call to my wife and moments after that my airtime and data were depleted. i then called Vodacom and logged a query with them and while i was logging a query the lady that was assist me she couldn't even tell me how many calls i made that day, she logged a query for me as she couldn't give me any answers. on Saturday a guy called me and his purpose for his call was to tell me what happened to my airtime and data but the fashion in which it was done was so unpleasant, dismissive and i felt so belittled and worthless as i couldn't even ask questions. it was so heart breaking to get that kind of service from a provider that i've been so loyal to for more than 10 yrs and to make it even worse I'm paying for 3 contracts as we speak. can someone please help me regarding this matter. with this kind of behaviour i don't see myself doing any business with them going forward."