My airtime

I am so furious with vodacom and their supervisors that speak to you like you are a crazy woman, I loaded R110 airtime this morning and in a matter of 10 minutes after charging my phone , my airtime is depleted. I call the center and they keep telling me its because I am using an Iphone. I have been an Iphone user for more than 7 years now and I have never heard or experienced such hence I called, not for fun but because I do not understand why my airtime got depleted. My applications automatic updates are off so I don't know what they talking about. To make things worse, this lady I spoke to makes this an Iphone issue, she cannot even apologize on behalf of vodacom and she is addressing me like an illiterate person which I don't understand why because I have a right to be irritated because this money I spent is mine and I need to understand what happened to it without a person that will ridicule me because that will only irritate me more. So honestly I am sure I am not the first or the last person that will complain about vodacom cause I can see the rating is very low, but they seriously need to do something about this airtime problem, it is extremely annoying!!!