No response to sms

Forced to buy a cashless card at Mumford and Sons concert. Monies left over. Upon smsing to claim monies back, absolutely no response or feedback. They charge you R10 for a card, sms fees and supposedly admin fees to get your money back but don't provide any admin services. Absa ought to look into this as their name is all over the card. Breach of Consumer Protection Act?? I think so!