AT&T GoPhone AT&T Wireless, GoPhone refuses to rollover minutes, stole $50 from my daughter's account. Never use ATT. Internet

I purchased $50 for my daughter to use on a prepaid phone.  On the card, when I purchased it, it stated that the minutes would expire in a year.  After 90 days, however, I am informed that her minutes are set to expire.  I contacted ATT and they informed me that I could only extend the minutes another 30 days if I purchased even more minutes.  This is a scam, should be illegal and in my opinion is a class action lawsuit waiting to happen.  Please DO NOT use ATT GoPhone.  There are much friendlier and better (honest) companies out there that do not have minutes that "expire" in such a short time.