They ******* my old mom into airtime subscription

My mother was sent an sms from Vodacom offering her a reward of a free R55 airtime. I the sms she was told to reply \yes\" if she accept the airtime. Just like an old village woman she rep**** yes thinking it is one of their promotions. All her problems began the moment she said yes to that sms. After that all her caller ID's and other things on her phone was blocked. she tried changing from one phone to another thinking there's a problem with the phone, but it didn't work. She then decided to do a sim swap, &amp