Scammers love the vulnerable population. Elders of course, but also special needs. This month AT&T and BuneUS (Mblox) teamed up to put a $10/month charge on our mobile. I suspect my son responded to a text spam on his phone and thereby 'signed' a contract.
AT&T will reverse the charges -- but more importantly you can put a "purchase block" on all phones. It's a form of parental control. I put it on my phone too -- I want it for me as well as my son. It blocks everything -- so no accidental ring tone charges. Details here: Gordon's Notes: Crammed: Mblox $9.99 a month.