Airtime n Data *******

I am really losing it with Vodacom. I have been ********** of Data and Airtime in under an hout. I had airtime of R59 and with an hr it disappeared. I had Data of 150mb and then it also disappeared. I thenk bought more data of abt 500Mb. Within an few minutes gone. This is really unacceptable. Vodacom will loose clients to Cell c if they carry on like this as this is not my first or second incident. It has been happening but i wasnt really taking note of it.