Where does all my airtime go to!!!

I have just about had it with Vodacom. The network is never available in emergencies and when you finally get through all airtime loaded just vanishes. What is going on with Vodacom? I would like a complete investigation to be conducted on my account, using number ***. I load airtime And have to put data services off due to my airtime bring eaten up then when I finally phone in, at my inconvenience, your operators tell me I am using the internet!!! What??? At 2 in the morning??? I am a working lady and have no time for this ****. Meanwhile, what do we do in emergencies because you force me to put my data services off so no BBM!!! Yet I buy the service every month. I want an explanation and my funds refunded cause I have had enough now.<br>