And what if one were hard of hearing ?

In a heated phone conversation with an employee of Nedbank I insisted that what he was telling me be backed up in an email, since I will have no record of the conversation.

He did so and I now have an email in black and white: dated; clear; unambiguous; with a reference number; together with my original inquiry and to which I can easily reply to. And I can print it, forward it, or make a screenshot and attach it to a message.

How on earth is a phone conversation, most of which is legal mumbo-jumbo, superior to the abovementioned email exchange ?

Also a phone conversation, which is difficult to retrieve and to refer to, is reliant on one memorizing the details thereof, especially for older customers.

And what if one were hard of hearing ?