Re: iPhone 5S uses cellular data even when connected to WiFi

This just happened to me again.  This is the 3rd time my grand daughter's phone went over the limit of her data plan in less than a year.  It all started when she got the iPone5.  I called Apple, they said the phone is not the problem, it's AT&T.  I called AT&T every time they charge me the extra $10.00 for the overage, they say the same thing, it's not them.  I asked them to scale the useage when she reached her limit, like other carriers do, they said they don't have that ability, I asked them to txt me, the main account number, when she is about to reach her limit, they said they don't have that ability either.  AT&T makes over $10 billion dollars a month, they literally penny pinch customers, and they don't have the ability or refused to update their systems.  I called AT&T Tuesday night, Feb 11th, they said to call Customer Service the next morning and explain to them my situation.  I called yesterday Wednesday, 
Feb 12, morning and they said the message said customer services was closed and to call the next business day, I even called back and puch sales line and it wasn't working either.  I called this morning and they answered the phone, I asked them why they were closed yesterday and they said because they were updating their system but they were open.  I'm confused I thought customer service was 24X7.  Anyway I explained that AT&T is still using the dataplan while the iphone5 is on wifi, and this is the 3rd time this happened, and i had called Apple, they said call AT&T.  She said it's not AT&T.  Confused again.  But I believe Apple over AT&T.  I have been a customer for AT&T before they sold to it Cingular and I know that AT&T changes their stories several times depending on who you talk to.  Oh one of the things that I've been noticing, they have no notes of some of my previous converstions on the computer.   I have no proof that AT&T is engaging in fraudlant activities.  But I don't understand why they refused to add programs and systems to let customers know, and better control over their plans, get authorization before AT&T charges them.