STOP *****ING DATA

My daughter purchased R70 MTN airtime at 21:50pm ( 20th October 2017) and purchased 300MB of data as well as R25 anytime minutes and and still had R20 airtime remaining but at 22:10pm, without using her phone, all her data and airtime was depleted. We called The MTN call centre 3 times, the first agent said, it is not updated on her side, we must call back at 22:30pm, the 2nd agent said , we must call back from my daughter's cell phone and the 3rd agent who was so arrogant and rude, advised that she WONT assist my daughter because the phone is in her aunt's name : the phone was a birthday gift to my daughter by her aunt. This is not the first time that data and airtime has been taken without using any of it. I would like to know who is supposed to refund us our money or air time or data as this is purely theft and besides that, you call centre agents need to receive some training on how to speak to their clients - they are so unbecoming of a one supposed respected company.