************** against the deaf

So we have been trying to get my dad's previous contract with cell c cancelled but the call center keeps on wanting to talk to my dad over the phone. All good and well, however my dad is deaf. He cannot talk over the phone with someone. But sure enough, the call center lady does not understand this. They kept on deducting money from his account that we would like to get refunded, because his contract ended. Tygervalley cell c consultant was not very helpful either. Suggesting we need to send proof of his deafness to cell c head office. Wait... Is my dad experiencing ************** here or are we the deaf and dumb ones?