Bad attitude to client

I have recharged twice today before midday but I am unable to make a call. I call Vodacom to try and explain the issue I have when I try talking to her she tells me I must call after an hour, she was not even interested in my problem. She then says to me she can not assist I must call back as she knocks off in a few minutes- 3 minutes to be exact and she will not call IT to check what seems to be the problem with my airtime that no one knows what happened to as IT will take up her time and she has already knocked off. How do you even tell a client that you cannot help as you knocked of. I'm furious and someone needs to tell me how does this happen with such a huge network provider.