・ Telephone support desk users, I'm so sorry to say...
I think it's a good idea for companies to improve their accessibility in phone support. Using navigation dials can be helpful for people with disabilities, but it seems like some company's implementation is lacking . If the operator can't handle it, they should just put up a sign saying "can't understand" or something . And maybe they could have an alternative contact method for people who need more help? That way everyone can be happy and supported