Instruction not persued.

I am so very very disappointed yet again with Vodacom. I have 4 accounts linked to my profile including my own, I have on numerous times requested that NONE of the other numbers besides my own ( ********** 845) are allowed to do airtime advances. Despite my numerous calls and assurance from Vodacom that the other numbers will not be given the option to do an airtime advance, there is yet again an airtime advance done on mobile number ********** . I refuse to pay this and would like it be credited from my account please. Kids have these phones and to their mind no matter how many times I tell them NOT to do an airtime advance, they think it is free therefore I requested directly from Vodacom NOT to give permission. This is most annoying, I always have small issues with Vodacom, I am considering taking my account elsewhere. Please urgently ensure this is credited from my account and ensure that ALL the numbers BESIDES my own ( ********** 845) are NOT allowed to do airtime advances with immediate effect. Just to be very clear the ONLY number on my account which should be allowed an airtime advance is ********** 845 ALL the other linked numbers are NOT to be given access to this.