Data n airtime vanished

4 for 2 months straight to my cell phone numbers a time and data has just vanished. I contacted the call centre for assistance to find out what happened to the airtime and data and all the agent could tell me was sorry we can see it came in and we can see it left unfortunately we don't know what happened to it there is nothing we can do everytime I call that is the same response I get and I am highly disgusted with this response as there as I know there are many many people were the exact same issue I want my airtime and data ASAP for both of my numbers. I have emailed countless times. I have posted on Facebook Vodacom complaints page countless times. And no 1 has responded me! Disgusted