Watsapp Bundle does not work

I purchased a re-occurring Watsapp Bundle for R5.00 on the 20th November and noticed that whatever data I have available is being used up very quick. I then purchased a 100mb on the 22nd in the afternoon and thougth that would carry me through for a few days for my other applications. On the 23rd I was receiving songs via Watsapp and was retrieving them I receive an sms to say that I have less than 15mb available, this was very surprising to me as I know that I can transact on Watsapp with the bundle I purchased. I then purchased a further 100mb and retrieved 1 song from Watsapp and check my balance. Watsapp is taking my data although I have purchased the bundle. I called the call centre last night and spoke to Muzi, he said me that he cannot see anything on the system that I tried to retrieve. he says that I should call back in about 30 to 60 minutes, maybe then the system would have updated to show what I tried to do but if I have any queries I should wait for next month to query. I cannot wait for next month. MY data is going away and I have to keep on buying. Why isn't the bundle working I paid for. Re-imburse me all the data that has been used up by Watsapp.