I'm not sure why I would need to talk to a customer service person in real life at apple. If I did (and I don't think I ever had) need to communicate my preference would be via email, or perhaps real time text chat. There's no reason someone who's deaf couldn't be on the end of those.

I did however cancel a £1000 order with currys because they didn't provide anyone to talk to - by phone, email or even text chat (which only worked on some browsers). The only form of communication was 'fill this form in to cancel your order'.