Outsurance does not want to do business with hearing disabled people

Outsurance discriminates against the hearing disabled, as no facility is available to conduct business with them by any other means than telephone. Do they not realise that deaf people cannot speak on the phone? I am trying to amend my policy, but meet a dead-end everywhere. Emails are returned and on their website, the "best" they seem to be able to do is "one of our consultants will phone you"! The Human Rights Commission has already ruled this a discriminatory practice